Question about 1993 Oldsmobile Cutlass Supreme

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3.1 multa port fuel sensor

Too much fuel to trodel body and flooding.

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It has an injector for each cylinder. There is a pressure sensor that could be defective. Its in the fuel rail with a vac hose.

Posted on Jul 10, 2013

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Motor floods with gas


Mar 16, 2014 | 1999 Chrysler Town & Country

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90 Civic DX. Cranks but doesn't run. When towed in gear it will run, but 'bogs out' as soon as throttle applied. Engine floods upon trying to startup. Plenty of spark, fuel and air. Though

First I am not aware of two flaps or throttle plates in the body, but I do see a rubber diaphram with a rod that could open a plate with vac.
If you have something blocking air entering the throttle body it could cause the engine to flood. A faulty temp sensor could also be telling the computer to dump extra fuel into the cylinders, but you should have a trouble code for that.
If the plugs are getting spark the ignition system is working.
What would happen if you disabled the fuel pump and started it without extra fuel ? You could have a leaking fuel pressure regulator or something allowing extra fuel into the cylinders.

Jan 13, 2013 | 1990 Honda Civic

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I have a 88 k 2500 5.7 ltr. v8. im flooding out in the trottle body the injectors are pouring the gas in. i have change the fuel pump, sending unit, fuel filter.

Check to see if the Engine Coolant Temp sensor is disconnected or the wires to it broken. Test the ECT for proper operation. If this sensor fails, it will send a message to the computer that the engine is still full cold--even though the engine may be warm. The computer will schedule too much fuel for a warm engine and you'll have flooding out.

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Have troble starting engine after letting seat for a while with unit hot have change fuel regulator next to intake and change out body trodel position sensor

You need to check fuel pressure with a fuel pressure gauge. The regulator is a good guess but the fuel pump can also be letting fuel pressure drop. Once fuel pressure drops on a hot engine the fuel in the fuel rail will boil and essentially be a vapor lock condition. Fuel pressure should be around 56 psi and hold steady for at least 45 minute to an hour. If it drops within a couple of minutes to check valve in the pump is probably bad and the fuel pump module will need to be replaced.

The other thing, when you replaced the fuel pressure regulotar is is possible that you did not get all the old pieces from the old regulator out of the fuel rail. It is common for the screen and o-ring from the old regulator to stay in the fuel rail and they need to be removed carefully with a small pick.

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1 Answer

The car acts like it is flooding,while driving it.It will sputter along then it will cough and then runs fine for awhile.I have put in several cans of injector cleaner,not alot of help.I popped out the...

It sounds like the fuel pressure regulator is not working.Too much fuel pressure at low speeds, and at idle,not enougfh fuel return into the tank.This may flood the intake ports and too much injector cleaner may destroy the in line fuel filter it may not be filtering the fuel,just bypassing the filtering ,like no filter at all.

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Try replacing the fuel pump relay or testing it if you have the manual.

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