Question about 1987 Nissan 200SX

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Seems to be overfuelling

I have a Nissan Pintara (I think 200sx is closest) with a CA20e SOHC EFI engine and it will not start. I think the problem is overfuelling, it has spark, compression and air, it just seems like there's too much fuel going in as the oil could actually be ignited because there was that much fuel in it. What could be causing this?

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  • lik_my_onion May 25, 2009

    Compression was perfect on all 4 cylinders.
    The car started and ran twice without a problem then on the 3rd attempt it just wouldn't start and hasn't started since.

  • lik_my_onion Jun 17, 2009

    I did what you said, fired and ran for a second, reconnected the injectors and it wouldn't start and flooded out.
    Replaced the ECU with a second hand unit from the wreckers, bada bam, starts and runs fine every time. I assume the ECU was grounding out all the injectors, causing mass ammounts of petrol to be squirted in to the cylinder, when there's that much petrol in a cylinder and it's left to sit, it can quite easily pass down past the compression and oil rings in to the sump.

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There should'nt be any fuel in your oil, it sounds like you might have a blown head gasket. If you think it might be overfuelling then remove the injector clips (don't mess up the order) and pour some fuel down the manifold and try start it. If it does'nt give a good effort at starting then I'd say you need to run a compression test. Sounds like you have a cracked block, warped head or bad head gasket.

Posted on May 25, 2009

  • Dudeman321 May 25, 2009

    Disconnect the fuel injectors and pour some fuel down the manifold and post your results. I really cant see how you should have fuel in your engine oil, there simply isn't a way it should be able to get there.

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