Question about 1980 Cadillac Eldorado

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1980 Cadillac 368 is running rich burning too much fuel

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Posted on Jan 02, 2017

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The were not known for their reliability, but have been known to be good cars.
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Posted on Oct 20, 2012

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2000 Cadillac DeVille running rich city exhaust engine runs great uses boil it but doesn't burn have a blue oil leaves white smoke what could be the problem with it?


Running rich burns black smoke.

Burning oil, burns blue smoke.

Burning white smoke is steam and can be indicative of a damaged head gasket, or just weather conditions. Fuel contains water at molecular level.

Feb 03, 2017 | Cadillac Cars & Trucks

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Data link componet location not found on vehicle


locate green connector in the wiring harness coming directly out of the ECM. ECM located under dash on the passengers side behind glove box.with engine running connect the single terminal in this connector to a good ground.

Dec 13, 2013 | 1980 Cadillac Eldorado

1 Answer

Fuel pump cut off switch 1980 eldorado


On 1980 Cadillac there is no cutoff switch, On EFI CAR they are
controled by the computer control module, on DFI CARS there is
RELAY next to the fuse also has fusePanel on the left side of car under dash
Depends on size of engine. EFI CARS only have a 20 amp fuse.

Apr 13, 2013 | 1980 Cadillac Eldorado

1 Answer

1980 Cadillac Biarritz 368 fuel injection


How about timing chain being worn & gears stripped ?

Put a timing light on it, then put the pick up on a wire
half way thru the firing order & see if they timing is
the same.

Feb 17, 2013 | 1980 Cadillac Eldorado

1 Answer

1980 Cadillac Biarritz 368 running rich and lost of vacuum


Did you ever figure out the problem just wondering I'm having the same problem out pf my 1981 Cadillac eldorado biarritz one sides cool the driver side passanger sides hot and it misses bad

Dec 29, 2012 | 1980 Cadillac Eldorado

2 Answers

Oxygen sensor i am having problem with


MANY THINGS WILL CAUSE RICH FUEL MIXTURE PROBLEMS.LIKE INTAKE MANIFOLD VACUUM LEAKS.EVAP CANISTER FUEL SOAKED.LEAKING EXHAUST MANIFOLD AND EXHAUST PIPES.LEAKING EGR VALVE GASKET.FAULTY FUEL PRESSURE REGULATOR. FUEL CONTROL SENSORS OUT OF CALIBRATION LIKE THE ECT IAT MAF SENSOR AND FAULTY STUCK OPEN FUEL INJECTORS.

Jun 03, 2010 | 1997 Cadillac DeVille

1 Answer

I have white smoke coming from the tail pipe of my 1996 Cadillac DeVille. Not a blown head gasket, no water in the oil. Could it be my pistons or just needing new seal. Am I burning oil or have an oil leak...


hi... it all depends on the colour of the smoke... usualy blueish smoke will mean it is oil burning and your piston rings may be getting worn if it is black then it might be running too rich etc.. a little bit of water is fine infact usualy it is a good sign that your engine is not running rich or lean so it is pointing towards oil seals... also if it was running rich it would probably do it more when it was cold

Feb 11, 2010 | 1996 Cadillac DeVille

3 Answers

Replacing spark plug wires on a 1981 cadilac eldarado. I m confuse where the wires go. i need diagram for replacing the wires. Its the 8-6-4 engine


Not sure what you mean by 8-6-4 but this will help you. Pick the correct one for your application:


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GM (Cadillac) 250 (4.1L) V8 .GM (Cadillac) 273 (4.5L) V8 .GM (Oldsmobile) 307 (5.0L) V8 .GM (Oldsmobile) 350 (5.7L) V8 w/EFI.Engine firing order: 1-8-4-3-6-5-7-2 .Distributor rotation: counterclockwise


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GM (Cadillac) 368, 425, 472, 500 V8.Engine firing order: 1-5-6-3-4-2-7-8.Distributor rotation: clockwise



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GM (Cadillac) 429 V8.Engine firing order: 1-8-7-2-6-5-4-3.Distributor rotation: clockwise

Oct 06, 2009 | 1980 Cadillac Eldorado

2 Answers

My 92 cadillac deville is burning gas wrong internally ....i just replaced spark plugs and wires and there is black stuff like carbon or somethin already on them...timing has been fixed..distributor cap ,...


fuel mixture is out burning rich try the air filter in case is blocked up ,most likely fault is the mixture control which is govened by sensors controled by the ECU

Sep 20, 2009 | 1992 Cadillac DeVille

1 Answer

1989 Deville 4.5 TBI No start condition. I need a step by step Cadillac, or GM diagnostic procedure to double check what I have done. I have replaced: 4 of eight spark plugs that were fowled replaced...


A faulty map sensor will make it run rich and so will a bad or misadjusted TPS but it should try to crank. Check mat sensor. A stopped up converter will do this to.

Apr 26, 2009 | 1989 Cadillac Sedan DeVille

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