• 1982 Fiat 124 Spider 2000 Service Manual Free Download
• 1979 Fiat Spider 2000 Value
• 1980 Fiat Spider 2000 Convertible

Collection of free car service manuals. Home /; Fiat /; 124 Spider; Fiat 124 Spider 1975 1976 1977 1978 1979 1980 1981 1982 service manuals.

. 4-speed. 5-speed manual. 3-speed Dimensions 89.75 in (2,280 mm) Length 156.25 in (3,969 mm) Width 63.5 in (1,613 mm) Height 49.25 in (1,251 mm) Chronology Predecessor Successor The Fiat 124 Sport Spider is a sports car marketed by for model years 1966-1980.

Designed and manufactured by Italian, the, front-engine, rear drive Sport Spider debuted at the November 1966 with styling. Fiat later marketed the car as the Spider 2000 (1979-1982), and Pininfarina marketed the car at the end of its production as the Pininfarina Spider Azzura (1983-1985).

The 124 Spider was marketed in Europe through model year 1975 and the U.S. Through model year 1982. Sales resumed in Europe and continued in North America in 1983 when Pininfarina began marketing the 124 as the Pininfarina Europa Spider. In 2015 a of the Fiat 124 Spider was presented at the. Fiat Abarth 124 Rally Fiat Abarth 124 Rally Body and chassis 2-door spider with fixed Chronology Successor The Fiat Abarth 124 Rally is a street legal rally version of the 124 Sport Spider sold to the masses, known also as '124 Abarth Stradale', introduced in November 1972. Its main purpose was to receive in the racing class, and replace the 1.6-litre Fiat Sport Spider rally cars which were presently being campaigned. At the time 124 had already won the 1972 at the hands of and Gino Macaluso.

The 124 Rally was added to the Sport Spider range, which included the 1600 and 1800 models; the first 500 examples produced were earmarked for the domestic Italian market. Amongst the most notable modifications over the standard spider there were, engine upgrades, lightweight body panels, and a rigid. In place of the usual rear, there is independent suspension from lower wishbones, the original trailing arms, an upper and an anti-roll bar. At the front a on each side was added to the standard double wishbones. The Abarth-tuned type 132 AC 4.000 1.8-litre, twin-cam engine was brought from the standard 118 to 128 PS (94 kW; 126 hp) by replacing the standard twin-choke with double vertical twin-choke 44 IDFs, and by fitting an Abarth exhaust with a dual exit muffler. The 9.8:1 compression ratio was left unchanged.

The transmission is the all-synchronised five-speed optional on the other Sport Spider models, and brakes are on all four corners. Despite the 20 kg (44 lb) four-point fitted, is 938 kg (2,068 lb), roughly 25 kg (55 lb) less than the regular 1.8-litre Sport Spider.

Engine bonnet, boot lid and the fixed hard top are, painted matt black, the rear window is and the doors aluminium. Front and rear bumpers were deleted and replaced by simple rubber bumperettes. A single matte black was fitted. Matte black wheel arch extensions house 185/70 VR 13 CN 36 tyres on 5.5 J × 13' four-spoke. Inside, rear occasional seats, and glovebox lid were eliminated; while new features were anodised aluminium dashboard trim, a small three-spoke leather-covered Abarth, and corduroy-and-leather as an extra-cost option. The car carries Fiat badging front and rear, Abarth badges and 'Fiat Abarth' scripts on the, and Abarth wheel centre caps. Only three paint colours were available: Corsa red, white, and light blue.

Fiat Abarth 124 Rally, specifications and comparison Fiat Abarth 124 Rally Fiat 124 Sport Spider 1800 Engine 1,756 cc Carburettors 2x twin-choke Weber 44 IDF 1x twin-choke Weber 34 DMS Power 128 PS DIN (94 kW; 126 hp) at 6,200 rpm 118 PS DIN (87 kW; 116 hp) at 6,000 rpm Torque 16.2 kg⋅m (159 N⋅m; 117 lb⋅ft) at 5,200 rpm 15.6 kg⋅m (153 N⋅m; 113 lb⋅ft) at 4,000 rpm 2,280 mm (89.8 in) 2,280 mm (89.8 in) Length 3,914 mm (154.1 in) 3,971 mm (156.3 in) Width 1,630 mm (64.2 in) 1,613 mm (63.5 in) front–rear 1,413–1,400 mm (55.6–55.1 in) 1,346–1,316 mm (53.0–51.8 in) incl. 75 kg driver 938 kg (2,068 lb) 960 kg (2,116 lb) Top speed over 190 km/h (118 mph) 185 km/h (115 mph). Fiat 124 Abarth at Sliverstone circuit 2003 In 1971 the 124 Spider was prepared for the World Rally Championship when Abarth became involved with its production and development. Abarth designer Ing. Colucci was responsible for getting the 124 Spider into group 4 rally trim. Over this period the Abarth Spider had relative success with wins at the 1972 Hessen Rally, Acropolis Rally, 1973 Polish Rally, 19th on the 1973 RAC rally and seventh to mostly the Alpine Renaults on the 1973 Monte Carlo Rally. The Spider continued to perform with first, second and third in the 1974 eighth Portuguese TAP Rally, sixth in the 1974 1000 Lakes, fourth in the 1975 Monte Carlo Rally and also with driving the spider to third place.

By 1976 the days of 124 rallying were numbered due to the appearance of the Fiat-Abarth 131. Production The model ended in 1985 after almost 200,000 spiders alone had been manufactured, with 75% for the US market.

There were nine models of the spider, the AS, BS, BS1, CS, CSA (Abarth), CS1, CS2, CS0, and DS. Year Model Starting chassis no.

. Engine Maintenance and Modification Bradley Artigue Edition. Engine Maintenance and Modification Bradley Artigue Edition. FIAT 124 Spider Engine Maintenance + Modification Contents 1. Introduction.5 2.

Concepts.6 2.1 The Otto Cycle.6 2.2 Lambda.6 2.3 Carburetor.7 2.4 Fuel Injection (FI or EFI).7 2.5 Compression Ratio (CR).7 2.6 Home Mechanic.8 2.7 Shop Manuals and Guides.8 3. Tables.90 Copyright © 2007 Bradley James Artigue. All Rights Reserved. This guide and others in this series are for educational purposes.

1982 Fiat 124 Spider 2000 Service Manual Free Download

All are freely distributable in their original, unedited, and complete form. The online home of this document is www.artigue.com/fiat.

2004, a guide (more like a pamphlet) on fuel injection. I revised both guides over the years and finally compiled everything into this single document. My goal is to help you enjoy your FIAT as much as I enjoy mine. Acknowledgements and great thanks to.

FIAT 124 Spider Engine Maintenance + Modification 2. Concepts This section describes some of the basic things we’ll discuss throughout this guide. 2.1 The Otto Cycle The most common type of operation for automotive engines is the four-stroke cycle, also known as the Otto cycle.

(π) character and because formulas make guides like this one look more scientific and authoritative. FIAT Spiders had compression ratios that ranged from a low of 7.5:1 (Spider Volumex) to a high of 9.8:1 (124 Sport Spider 1608). The Volumex relied on a supercharger to increase the horsepower of the engine. A “shop manual” is referred to many times in this guide.

There is only one shop manual for your car, it was originally published by FIAT and is sold by FIAT parts vendors. There were also numerous “guides” published by companies like Autobook, Haynes, Chilton’s, and Drake. It is important to know what engine, cylinder head, carburetor, intake manifold, and exhaust system you have on your FIAT. Understanding what you have allows you to make an educated decision about what you need. If you are not 100% sure of what you have then take a few moments to check - many have had engine, cylinder head, carburetor, exhaust, ignitions, and all kinds of other parts swapped out. FIAT 124 Spider Engine Maintenance + Modification Table 1: Engine Identification Table Model Year Series From S/N Engine Displacement 1967 – 1969 124AS 5619 124AC.040 1438cc 1970 – 1971 124BS 21861 124AC.040 1438cc 1971 - 1972 124BS1 33950 125BC.040 1608cc.

FIAT Spiders manufactured from 1967 through 1980 were equipped with carburetors, except in California where the 1980 model year introduced fuel injection. Carburetors were provided by Weber SpA (Italy). FIAT and Weber have a long history; in the 1920s Eduardo Weber began producing carburetors for conversion kits intended for FIAT vehicles. FIAT 124 Spider Engine Maintenance + Modification. A Venturi (E). The purpose of the venturi is to increase the depression acting on jet (D) to favor the vaporization of the gasoline sprayed from the jet during engine operation. FIAT 124 Spider Engine Maintenance + Modification 4.3 Idle Speed Control An additional improvement is an idle speed device (figure 4).

This device allows your engine to maintain the lowest rpm rate at which it will keep running. Figure 4: Idle Speed Circuit.

D main fuel jet, Da idle speed air jet, Db idle speed fuel jet, 1 idle speed. Holes in the side of the carburetor are not enough to keep the transition and power curves smooth. Your FIAT Spider has a “quick throttle,” meaning that throttle movements can be fast enough to cause a lean condition. To compensate for this your carburetor is fitted with an accelerator pump, used to inject additional fuel during the transition stage. 4.6 Cold Starting On a cold morning your FIAT may be hard to start.

If things are working properly you will do one of three things to set the cold start device. You may pull a knob under your dashboard. FIAT 124 Spider Engine Maintenance + Modification Engaged Disengaged Figure 7: Offset choke, P choke valve, C spray nozzle, E venturi, F throttle, O calibrated spring 4.7 Multi-Barrel Synchronization We now move into the final discussion on carburetor operation, the multi-barrel carburetor. FIAT 124 Spider Engine Maintenance + Modification Figure 8: Mechanically controlled differential opening of the throttles.

F1 Primary throttle, F2 Secondary throttle, Q Accelerator level integral with primary throttle F1, R Intermediate lever for control of secondary throttle F2 The synchronization is established through a mechanical or vacuum linkage that activates the secondary barrel when the primary barrel is approximately 2/3 open. FIAT 124 Spider Engine Maintenance + Modification Figure 9: Vacuum controlled differential opening of the throttles – 1 Interconnection between primary venturi E and diaphragm S, E Venturi, F1 Primary throttle, F2 Secondary throttle, S Diaphragm for operation of secondary throttle F2, Q accelerator level integral with primary throttle F1 –R intermediate. FIAT 124 Spider Engine Maintenance + Modification Figure 10: DHSA1 Carburetor Base Plate Weber nomenclature is not easy to decipher.

The important thing to note is the numbers before the letters and the letters themselves. If you read “26/34 DHSA 1 OC”. FIAT 124 Spider Engine Maintenance + Modification 4.8.1 Weber DFH The DFH was used on early production 1438cc Spiders. It is not a common item on cars imported into the United States. The DFH is operationally similar to the DHSA carburetor fitted on later models.

FIAT 124 Spider Engine Maintenance + Modification The diagrams on the following pages show the exploded views of the DHSA carburetor. For a description of the operation of the carburetor refer to the section on the DMSA. The DMSA is operationally similar with the exception of the vacuum secondary. Weber 40 IDF carburetors. Although never an option for U.S.

Cars many of the manifolds and carburetor pairs were installed on Spiders of virtually every engine displacement from 1608 to 2000. Although no FIAT manifold directly fit the 1438 series, an Abarth manifold was produced that would allow for IDFs on that engine. FIAT 124 Spider Engine Maintenance + Modification From bowl (2), through main jets (18), fuel reaches wells (17).

After mixing with the air from emulsion tubes (16) and air corrector jets (9), the fuel reaches the carburetion area consisting of auxiliary venturis (11) and main venturis (12) via nozzle (10). The carburetors. FIAT 124 Spider Engine Maintenance + Modification Figure 17: IDF Acceleration Upon closing butterflies (15) lever (37) frees diaphragm (41) which, under the pressure of spring (40), draws fuel from bowl (2) through ball valve (38). Upon opening butterflies (15) diaphragm (41) under the action of cam (36) and lever (37) injects fuel into carburetor ducts through ways (35), delivery valves (33) and pump jet nozzles (34). FIAT 124 Spider Engine Maintenance + Modification (48), the mixture is conveyed to carburetor ducts on downstream side of butterflies (15) via ducts (47). Starting with a cold engine - Starting device ON - position A. Starting with a semi-warm engine - Starting device partially ON - Position B.

FIAT 124 Spider Engine Maintenance + Modification Figure 20: DMS Carburetor Side View The DMSA and DMS are popular upgrades for DHSA owners. Problems with the vacuum-operated secondary unit (typically stemming from a misunderstanding of how it works) would lead to cars that ran poorly. FIAT 124 Spider Engine Maintenance + Modification device on the primary (34 DMS/201) or secondary barrel (34 DMS 1/201 - 34 DMS 2/201): from bowl (17) the fuel metered by a calibrated bush (3) get mixed with the air coming from calibrated orifice (4).

1979 Fiat Spider 2000 Value

FIAT 124 Spider Engine Maintenance + Modification From emulsion tube (15) the fuel is drawn to idle jet (48) through duct (42): emulsified with the air from calibrated bush (49) via duct (46) it get mixed with the air from calibrated orifice (47) and reaches the carburetor primary barrel downstream of throttle (13) through the calibrated bush (37) adjustable by screw (41). FIAT 124 Spider Engine Maintenance + Modification delivered by the accelerator pump is exhausted into bowl (17) along with pump chamber vapors, through the calibrated bush (53).

Figure 24: DMS Starting With lever (63) in position A , butterflies (62) blank the carburetor air intakes whilst throttle (13) opens partially by mean of rod (67) and lever (68) fast idle. FIAT 124 Spider Engine Maintenance + Modification Figure 25: DMS Dimensions 4.8.5 Weber ADFA The ADFA was introduced in the 1975 model year and used through the 1978 model year.

It has a mechanically-controlled secondary and a choke that is controlled by water temperature. FIAT 124 Spider Engine Maintenance + Modification Figure 27: ADF Normal Operation Through needle valve (1), fuel passes into bowl (16) where the float (17), hinged on pivot pin (19) sets the opening of needle (20) in order to keep fuel level constant: the needle (20) is connected to the lug of float (17) through the return hook (18). FIAT 124 Spider Engine Maintenance + Modification Figure 28: ADF Idle Speed and Progression From primary well (30) fuel reaches idle jet (34) through duct (43): after emulsifying with the air coming from calibrated bush (35), it flows through duct (42), calibrated bush (40) —. FIAT 124 Spider Engine Maintenance + Modification Upon opening of throttles, the diaphragm (50), under the action of cam (53) and lever (52), injects fuel into primary carburetor throat through duct (54), delivery valve (55) and nozzle (46).

Spring (51) absorbs quick throttle opening and allows regular feeding from jet (46). Any excess fuel delivered by accelerating pump, together with pump chamber vapors, is exhausted into bowl (16) through calibrated orifice (48). FIAT 124 Spider Engine Maintenance + Modification Should the accelerator be depressed when the choke is included, the screw (61) would disengage the cam (60) which drawn by spring (63) would reduce the opening of primary throttle (23). The engine cooling-water warms up, and, circulating in the cover (70) heats the bimetallic coil (58) which will make the lever (67) turn and through the above mentioned linkage system, will cause the progressive opening of choke plate (59). FIAT 124 Spider Engine Maintenance + Modification Figure 32: ADF Dimensions 4.8.6 Weber ADHA The ADHA is similar to the ADFA except for the secondary barrel, which is vacuum controlled. This is a hard carburetor to love. Introduced with the 2000cc engine the ADHA was a small carburetor on the largest of the Spider motors.

FIAT 124 Spider Engine Maintenance + Modification does not remain running then increase the idle speed screw ½ turn until it does). Adjust the idle speed screw until the engine runs at approximately 900 RPM. Let the engine warm up to operational temperature. On a Spider you will typically wait until the fan has cycled two times (on-off-on-off). FIAT 124 Spider Engine Maintenance + Modification too small. Consider increasing the idle jet size by adding 10 to the size (if you had a 45, increase to 55) then re-set the mixture.

Continue up (or down) in increments of 5 or 10 if this appears to be helping. There is some argument about the transition from carburetion to fuel injection. The most plausible story is that FIAT first offered fuel injection as an option, then as standard equipment in California, then as standard equipment for the entire line. A more sophisticated and reliable system, the L-Jetronic soon emerged.

An oxygen sensor followed and was quickly adopted by European car makers including FIAT who were struggling to make small high performance engines meet the 1980 California and 1981 U.S. Federal emissions requirements. Many additional options including atmospheric pressure sensors, knock sensors, and crank angle sensors, are all possibilities with L-Jetronic but were never installed. FIAT quite literally built a system around the existing 2000cc carbureted engine.

The simplicity results in a system that is inexpensive, easy to diagnose, and can be repaired by the home mechanic. The pump fitted to the FIAT 2000 engine produces between 50 and 80psi, which is controlled to between 36 and 43psi by the fuel pressure regulator. Figure 35: Warm-up Operation in the Bosch L-Jetronic System 5.5 Idle Speed Control Components Your FIAT fuel injection system maintains idle by allowing a small amount of air to bypass the throttle plate and enter the throttle body. This amount of air is controlled in three ways.

FIAT 124 Spider Engine Maintenance + Modification airflow is directed through a passageway above the throttle and controlled by a needle valve. In this way a fixed amount of air is allowed into the engine at idle, and that volume of air is easy to adjust and control.

1980 Fiat Spider 2000 Convertible

This operation is depicted in Figure 36. (such as the a/c compressor) is switched on. Rarely do FIAT Spiders even have this valve, but if you have the aftermarket air conditioner it may be fitted. You’ll also notice the fuel delivery components, the fuel pump, fuel filter, fuel manifold, and fuel pressure regulator.

FIAT 124 Spider Engine Maintenance + Modification 5.9 Component Reference The following pages contain sketches and part numbers for the various fuel injection system components and brief descriptions of each. Table 3: Major Fuel Injection System Components Component Description Lambda Sensor. FIAT 124 Spider Engine Maintenance + Modification Component Description Auxiliary Air Regulator P/N 0 280 140 120 or 0 280 141 013 (Spider with A/C) This device allows air to be drawn directly into the plenum, bypassing the throttle plate. The effect is an increase in idle speed – the computer will give the engine more fuel to create an appropriate ratio to the inbound air. FIAT 124 Spider Engine Maintenance + Modification Component Description Fuel Injector & Seals Fuel Line P/N 0 280 150 127 (DS0 Spiders) or 0 280 150 121 (CS0 Spiders) Seals P/N 1 280 206 702 and 703 Connector A fuel injector is an extremely simple electrical device.

The ECU will send a. FIAT 124 Spider Engine Maintenance + Modification Component Description P/N CU97X The ECU is a small computer located under the glove box. It is not a serviceable component. The connector on the ECU is used to test many of the sensors in the FI system. FIAT 124 Spider Engine Maintenance + Modification Figure 37: Idle speed controls on the Spider 2000 Lock the accelerator stop screw with the retaining nut. Use the idle speed screw (1) to set idle at 850 to 900 RPM on manual transmissions and 700 to 800 RPM on automatic transmissions. FIAT 124 Spider Engine Maintenance + Modification 5.11 Fuel Injection System Electrical Diagrams These diagrams are part of a complete set for the 1980 – 1982 Spider available at www.artigue.com/fiat.

Figure 38: Primary Connections on the Electronic Control Unit If you need a high quality print, download the diagrams from the website noted above and print from that file to virtually any size. FIAT 124 Spider Engine Maintenance + Modification Figure 39: Primary Fuel Injection Circuits. FIAT 124 Spider Engine Maintenance + Modification Figure 40: Fuel Injection System Electrical Diagram. FIAT 124 Spider Engine Maintenance + Modification 5.12 Fuel Injection System Part Numbers Table 4: Fuel Injection System Part Number Reference 1983 1982 1981 1980 CU97X CU97X CU96X CU96X Injection Valve 0 280 150 127 0 280 150 127 0 280 150 121. FIAT 124 Spider Engine Maintenance + Modification 5.13 Diagnostics and Troubleshooting 5.13.1 Air Input Diagnostics Air leaks are the single most common cause of fuel injection system problems. Air entering the system from any part of the engine not connected to the fuel injection system is “false air”. FIAT 124 Spider Engine Maintenance + Modification from the intake plenum and place the tip in a container.

Operate the starter. The valve should spray for 1-8 seconds or while the engine coolant is under 95 degrees F. The valve should have a fine misting spray, not a drip. If the valve fails to shut off or never sprays replace the valve.

The Bosch L-Jetronic system is extremely reliable; however, it has been over 20 years since the last L-Jetronic was installed in a FIAT Spider. Electronic parts fail over time, and those exposed to the heat and filth of an engine bay are no exception. If you are working with a newly acquired Spider or have never diagnosed all of your sensors it may be worthwhile to go back to the “Sensor Diagnostics”. FIAT 124 Spider Engine Maintenance + Modification The Bosch L-Jetronic troubleshooting table is presented in the table above. It does a good job of presenting many of the common faults with the system and giving possible causes and remedies.

This is followed by troubleshooting problems that are specific to the FIAT Spider. FIAT 124 Spider Engine Maintenance + Modification meter being set too low, so that the pulse of air during idle keeps turning the pump on and off. Adjust the rod as described in the “Air Flow Meter Failure” section above. The aluminum thing that your spark plugs are screwed into is the cylinder head. The cylinder head on a FIAT 124 Spider is of the semi-hemispherical, dual overhead cam (DOHC) type.

It is called semi-hemispherical because the operation occurs along a 180 degree arc. On the FIAT DOHC there are two camshafts, each with four lobes (one per valve, two banks (intake and exhaust)). The camshaft lobes move through the four phases for each 90 degrees of rotation. FIAT 124 Spider Engine Maintenance + Modification 6.1 Cylinder Head Identification Cast into the top of your cylinder head is an embossed identification number. Because it is possible (and oftentimes desirable) to install an earlier cylinder head on some blocks, you need to identify if such a swap has occurred on your engine. FIAT 124 Spider Engine Maintenance + Modification passage in the manifold is blocked.

Conversely, the 1438 manifold cannot be used on the other heads unless the passage in the head is blocked. The center-to-center combustion chamber spacing is the same on all heads. The combustion chamber sizes vary with the USA 2000cc amongst the largest, affording the lowest compression ratio. FIAT 124 Spider Engine Maintenance + Modification 7.

Intake Manifolds FIAT used two types of intake manifolds on carbureted engines. The type of manifold was relative to the type of carburetor.

Carburetors fitted with a vacuum operated secondary barrel (those with an “H” in the name) were fitted with a manifold with different sets of upper and lower runners. Emissions must be safely conveyed away from the passenger compartment; in the case of the FIAT Spider they are reduced by a catalyst and expelled behind the vehicle. Noise produced by an engine must be muffled in order for the vehicle to function in society. FIAT 124 Spider Engine Maintenance + Modification Table 8: Exhaust System Casting Numbers Year Manifold Header Pipe Intermediate Muffler Rear Muffler Note 19 438 19 438 19 438 19 4310530. Engine Maintenance + Modification 9.

Ignition The ignition system in your FIAT is one of four types, all of which operate according to similar principles. For the vast majority of Spiders, a distributor is mounted on the rear of the cylinder head. Some early Spiders were fitted with distributors that run off of the oil pump gearing. FIAT 124 Spider Engine Maintenance + Modification Spark Plugs have electrodes suspended in the combustion chamber and are connected to a cap on top of the distributor by wires. When the distributor releases the coil’s energy it travels through the cap, into plug wires, and into the spark plugs. The resulting spark ignites the fuel/air mixture in the combustion chamber. The now rare FIAT replacement part known as the Marelliplex system looks identical except that it has no vacuum canister on the side of the distributor (and no way to install one; a sure way to identify a fake Marelliplex is to see if the base has the opening and fitting for the vacuum dashpot).

9.4 Firing Order and Initial Timing All FIAT Spiders fire in the order 1-3-4-2. The initial timing is set so that the camshafts and crankshaft are in the initial position, with camshafts aligned with pointer holes and crankshaft aligned to the block mounted pointer. FIAT 124 Spider Engine Maintenance + Modification A nut holds the distributor shaft down on the engine block or cam box.

To turn the distributor (the engine does not need to be turned on at this point), simply loosen the nut so that the distributor rotates. There are two methods you can use to set the initial ignition timing. One is “by the book,” meaning you set it just like FIAT tells you to and lock it down. The second is to set the ignition timing by ear. There are advantages to both methods – your goal needs to be to set your engine to the point where it runs best, which may be “by the book”.

The running points are activated when full oil pressure is reached and the water in the intake manifold passages begins to increase. Dave Voss, a FIAT owner who took the time to disassemble and understand the differences in the 1979-1985 vacuum advance (electronic) distributors, noted the. FIAT 124 Spider Engine Maintenance + Modification Figure 44: Ignition Electrical Diagram for the 1967-1973 Spider IGNITION SWITCH 15/54 PINK LT BLUE/ DISTRIBUTOR BLACK GREEN BROWN/ WHITE 87 87a GREEN /BLACK BROWN IGNITION MODE RELAY 128/2 Figure 45: Ignition Electrical Diagram for the 1974-1978 Spider.

– if you do and the diaphragm is broken then you will suck in the paper and other dirt from the busted diaphragm. Note that some FIAT owners suggest that their car works fine with this unit disconnected or inoperable and the distributor manually advanced; you cannot set up your vehicle properly with this unit inoperable. FIAT 124 Spider Engine Maintenance + Modification be erratic during operation. Inspect the wires at every oil change and change if they are suspect. Rotor or Cap Failure Old, brittle, or over-tight rotors can explode inside the distributor cap.

They can spin themselves to pieces. A suggestion before you begin: if you are new to working on cars or new to your FIAT and note that the overall condition of your car is “worn” then consider the likelihood that the replaceable parts under your hood are also worn. FIAT 124 Spider Engine Maintenance + Modification Distributor Cap: If your cap has any cracks or shows obvious signs of wear on the electrodes then it is time for replacement.

Aftermarket caps are sometimes of poor quality; if you can find the original Marelli distributor cap it is always your best bet. Fill the system with the appropriate mixture of coolant and distilled water. Keep in mind that the FIAT cooling system is particular about how it is filled.

There are two popular procedures that you can do in your garage. Open your heater valve prior to performing either method:. FIAT 124 Spider Engine Maintenance + Modification (typically on the bottom, refer to your carburetor diagram). It can be removed and cleaned with carburetor cleaner.

10.2 Tuning Procedure Here are the steps to get your engine tuned to the factory specification. Note that the three steps really just refer you back to the proper section.

It's up to you to define performance in terms of what you want your car to do. Performance is relative to your needs. Do you want to build a 200HP Spider? It can be done, with a standard FIAT engine block, cylinder head modifications, high compression pistons, lightened flywheel and connecting rods, supercharging, etc. Polishing to an extreme can be counterproductive as it may eliminate some of the “swirl” that is good for combustion.

The good news is that the FIAT heads are usually very smooth and require little or no polishing. 11.1.2 Head Specifics We’ll work backwards from the late model heads to the early types, since the most. FIAT 124 Spider Engine Maintenance + Modification carburetor are collectively regarded as “boat anchors” and are always candidates for replacement. Simply replacing the carbureted 2000cc head with one from a 2000cc fuel injected or 1756cc engine will provide some improvement in efficiency.

Stock and aftermarket camshafts are available from parts vendors. If you are new to the 124 Spider or just now considering engine changes, there are stories all over the internet about the European specification 1608 camshaft having a “better”. Improvement can often be made by simply making sure your entire ignition system is working properly. Thad Kirk, a long time respected FIAT owner, has articles on points ignitions on www.mirafiori.com.

He notes that a well tuned points distributor provides reliability and performance right up. FIAT 124 Spider Engine Maintenance + Modification there with the electronic system. The trade-off is the older types require more maintenance.

If you want to eliminate this maintenance at the sacrifice of originality, you have options. The 1979-1985 electronic ignition system is a popular and easy upgrade from all previous types (dual and single points). (from a fish store). They can also be bought new from numerous sources as the FIAT part was used on various years of other European cars well through the 1990’s. The catalytic converter is another part you might consider leaving intact. Although it certainly consumes some power (it creates backpressure by its very design), newer types are far less restrictive than the original equipment FIAT types.

FIAT 124 Spider Engine Maintenance + Modification 11.5 Carburetors We discussed the stock carburetors earlier in this book. The carburetors were reasonably good matches to the engine size; however, a general rule is that the cars were always slightly under-carbureted. Every time an owner installs a DHSA2 on a car previously fitted with the DHSA1 the performance increases. FIAT 124 Spider Engine Maintenance + Modification Block and Head Intake Manifold Exhaust System Recommended Carburetor 2000cc 1756cc 1756cc 4-2-1 Weber 34 ADF 1756 Cylinder Head 8.9:1 or 9.1:1 Pistons 2000cc FI 4-2-1 Weber 28/36 DFEV Weber 36 ADL 2000cc. Figure 31: ADF Anti-Pollution Device Figure 32: ADF Dimensions 35 Figure 33: Bosch L-Jetronic Fuel Injection as used in the FIAT Spider 2000. Figure 34: Cold Start Operation in the Bosch L-Jetronic System Figure 35: Warm-up Operation in the Bosch L-Jetronic System.

FIAT 124 Spider Engine Maintenance + Modification Tables Table 1: Engine Identification Table Table 2: Carburetor Identification Table 3: Major Fuel Injection System Components Table 4: Fuel Injection System Part Number Reference Table 5: Fuel Injection System Troubleshooting Table 6: Cylinder Head Casting Number Table. www.artigue.com/fiat.