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'90 cx white smoke fuel smell in exhaust, not HG, help?

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Old Feb 17, 2012 | 05:50 PM
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silverstar4life's Avatar
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Question '90 cx white smoke fuel smell in exhaust, not HG, help?

d15b2 1.5 stock

recently my civic started to blow a white smoke that smells of fuel, the headgasket is not blown. For the first 10 or so seconds at cold and hot startup there is no smoke, then it smokes. It looks like the steam you see on a cold day at cold startup but does not smell of coolant only of exhaust and raw fuel, also at warm idle this steam/smoke occurs aswell driving with wot. I have checked the computer and it says:

coolant temp

TPS

Intake Air Temp

Fuel injector

I am lost as too if i should replace all of these or if one will solve my issue. I am thinking it just may be stuck in warmup cycle?

any positive input is greatly appreatiated.
 
Old Feb 18, 2012 | 04:18 AM
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How are you so sure the head gasket is not blown?

Running on too much fuel makes black smoke. Fuel smell in the exhaust is normal until warmed up.

For multiple codes, reset the ECU and see which code reoccurs first. The IAT, ECT, and TPS sensors can all be tested with a volt / ohm meter. ECT controls the transition from open loop (not warmed up) to closed loop (after warmup).
 
Old Feb 18, 2012 | 04:56 PM
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Originally Posted by mk378
How are you so sure the head gasket is not blown?

Running on too much fuel makes black smoke. Fuel smell in the exhaust is normal until warmed up.

For multiple codes, reset the ECU and see which code reoccurs first. The IAT, ECT, and TPS sensors can all be tested with a volt / ohm meter. ECT controls the transition from open loop (not warmed up) to closed loop (after warmup).
I have not lost any coolant, does not smell of coolant in exhaust, i drained the coolant and it is the same as when i put it in 4 or so months ago. Same with the oil, no cream under valve cover.

the car smells of fuel all the time, regardless of tempurature,

thanks for the ECU tips, i did reset but after approx 1hr of driving, no codes. It was still smoking so i am in the procces of replaceing the injectors with a friends ( Terrible Fuel consumption) and checking the ohms.

thanks, j
 
Old Feb 20, 2012 | 04:34 PM
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solved issue, the idle control valve on the intake manifold ,which has coolant running to it, had a small crack allowing water to seep into the manifold


thanks for all the input
 
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