1. #1
    josue estrada's Avatar
    josue estrada is offline Senior Member
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    engine oil smells like gas

    so i noticed that my oil has a smell of gasoline...
    Where should i start? The fuel filter has been replaced not too long ago. Should i start with a fuel pump replacement? or is there other things i should check first.

  2. #2
    wwch99tj's Avatar
    wwch99tj is offline Senior Member
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    If your oil smells like gas then you have "blow by". I would do a compression test on each cylinder and decide if you need a rebuild.

    The smell is normal to some extent but the compression test will give you an idea how well your rings are.
    Last edited by wwch99tj; 06-05-2012 at 05:11 PM.

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    If you have a carb. It could be leaking down as it sits. The fuel will run past the rings into the oil

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    Or it's flooding out.

  5. #5
    josue estrada's Avatar
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    Re: engine oil smells like gas

    ill look into that compression test

  6. #6
    carnuck's Avatar
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    Re: engine oil smells like gas

    Fuel pump could be leaking internally if it's carbed
    '87 Comanche 4x4 lifted 5 1/2" on 33" tires 4.0L/AW4/NP242 $3500
    Perfect combination but too small to haul my Grand Kids and wife in.


  7. #7
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    Re: engine oil smells like gas

    Usually happens with the rings don't seal perfectly. Like stated a leak down test will tell you. It can be made worse by fuel pump with too much psi or a leaking carb....but the rings are still usually the issue. If you don't want to do a top end on the thing, change your oil a lot and rock on!

  8. #8
    PoliceMonkey161's Avatar
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    Re: engine oil smells like gas

    X2 on the fuel pump.....It happened to me

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