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Smell gas in dipstick

Discussion in '1st Gen. Tacomas (1995-2004)' started by Allex95, Aug 3, 2020.

  1. Aug 3, 2020 at 2:33 PM
    #21
    Allex95

    Allex95 [OP] Well-Known Member

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    So would could it be then? I’m really stuck:facepalm: could cleaning throttle body fix this issue?
     
  2. Aug 3, 2020 at 2:34 PM
    #22
    Wyoming09

    Wyoming09 Well-Known Member

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    There was a litmus paper test for gas in the oil .

    Just a few drops off the dip stick will confirm.

    I have not used that in years.

    Might be so many additives it no longer works
     
  3. Aug 3, 2020 at 2:36 PM
    #23
    Allex95

    Allex95 [OP] Well-Known Member

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    Will try that
     
  4. Aug 3, 2020 at 2:38 PM
    #24
    ROAD DOG

    ROAD DOG Well-Known Member

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    the possibilties tho NOT realistic are endless............... guessing wont help U

    cleaning the throttle body wont adjust Ur valves which probably DONT need adjusting

    cleaning the throttle body wont stop excess gas in the crankcase oil

    something might be loose

    a wire might have come off a sensor

    spraying gumout wont cure either

    i understand U r flummoxed yet guessing wont help U

    good luck
     
  5. Aug 3, 2020 at 2:40 PM
    #25
    theick

    theick Well-Known Member

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    Start with the easiest solution first. Fix the possible vacuum leak at the throttle body. That will ruin your gas milage.

    There is always some gas in the oil as it gets past the rings.
     
  6. Aug 3, 2020 at 2:41 PM
    #26
    Allex95

    Allex95 [OP] Well-Known Member

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    Will do I’m only having the valves clearance looked at because I want to insure it’s all in spec
     
  7. Aug 3, 2020 at 2:42 PM
    #27
    theick

    theick Well-Known Member

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    Don't spend money on something that doesn't have anything to do with the problem. Even if the valves are toast it won't increase the amount of gas in the oil. Start with the simplest, most obvious issues first.
     
    gasparic104 likes this.
  8. Aug 3, 2020 at 2:50 PM
    #28
    Yetimetchkangmi

    Yetimetchkangmi Well-Known Member

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    no truer statement.

    Replace the crank case breather valve = $10
    Spray off the MAF = $10
    Replace clogged air filter = $20
     
    Allex95[OP] likes this.
  9. Aug 3, 2020 at 2:51 PM
    #29
    Allex95

    Allex95 [OP] Well-Known Member

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    Already did that. Replaced air filter clean maf. Replaced pcv
     
  10. Aug 3, 2020 at 2:55 PM
    #30
    Allex95

    Allex95 [OP] Well-Known Member

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    Just for better understanding on my issue. I have tried many things to see if it would resolve. Replaced PCV valve. Cleaned MAF sensor, New Air filter. Going to clean throttle body next.
     
  11. Aug 3, 2020 at 2:59 PM
    #31
    Yetimetchkangmi

    Yetimetchkangmi Well-Known Member

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    How are all the vacuum hoses? Mine, with 125K miles with 33" and auto trans, were brittle in some locations.
    It sounds like you are running rich.

    Have you checked the forward A/F sensor? or replaced it?
     
  12. Aug 3, 2020 at 3:00 PM
    #32
    Allex95

    Allex95 [OP] Well-Known Member

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    Hoses are good have to check again to double check. Yes im running rich but no engine codes so its a lot harder to find.
     
  13. Aug 3, 2020 at 5:52 PM
    #33
    ROAD DOG

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    running r e a l l y rich to funk up All 6 cylinders

    washing the cylinder walls

    leaving residual smell in crankcase oil

    what was the average MPG after rebuild b4 the issues ????
     
  14. Aug 3, 2020 at 5:53 PM
    #34
    Allex95

    Allex95 [OP] Well-Known Member

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    It’s just starting get worse it’s not always be bad was getting 17 now 13-14
     
  15. Sep 6, 2020 at 3:26 AM
    #35
    Dalandser

    Dalandser ¡Me Gustan Las Tacos-mas!

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    Did you figure out the sound that you thought was a vacuum leak? Worst thing you can do is start guessing without a simple plan to diagnose that doesn’t involve new parts. I’d imagine you won’t go far without first solving the alleged vacuum leak sound.
     
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  16. Sep 6, 2020 at 4:20 AM
    #36
    TacoJoeBro

    TacoJoeBro Well-Known Member

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    I'm not familiar with 1st gens, but ^^^ could help point you in the right direction. Check your fuel pressure.
    You stated you smell gas in crackcase, you hear air leak, and found fouled up plugs.
    If your FPR is vacuum referenced/regulated, and you have a vacuum leak(air sound near throttle body) you will have increased fuel pressure which will cause a rich condition(poor mileage)and some washdown of fuel into crankcase( smell of gas)
    Just some thoughts...
     
  17. Sep 6, 2020 at 4:24 AM
    #37
    Dalandser

    Dalandser ¡Me Gustan Las Tacos-mas!

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    Not a difficult test - do you know where the FPR is on your engine OP - if it’s like the V6 it’s at the back of the engine by the fuel rail.

    Have you tried pinching off hoses to make sure things like your brake booster and evap box aren’t leaking?
     
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  18. Sep 6, 2020 at 4:37 AM
    #38
    TacoJoeBro

    TacoJoeBro Well-Known Member

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    I think this is the direction I'd be looking. Vacuum leak. It checks all the boxes.
     
  19. Sep 6, 2020 at 10:20 AM
    #39
    Allex95

    Allex95 [OP] Well-Known Member

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    I believe I have a leaking injector that is causing this problem cause I’m having hard starts as well and I tried one time when it was trying to start and press the gas a little and it started up.
     
  20. Sep 6, 2020 at 12:34 PM
    #40
    Dalandser

    Dalandser ¡Me Gustan Las Tacos-mas!

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    People have already mentioned one leaky injector most likely wouldn’t be the case for a hard start - more than likely its something that affects multiple cylinders.

    Bottom line - you need to be able to verify if anything you think might be the issue. If a you have a leaky / stuck injector you could bring your rig to a good mechanic with the ability to do an injector pulse check. They’ll probably go over that in an hour diagnostic fee.

    Otherwise you could remove them and test them yourself using a battery and a bit of hose and a bucket - there’s tons of diy injector testing and cleaning videos online. But first you need to figure out what that leaking air sound is - a leaking / stuck injector isn’t causing that for sure. Anyway hope you get some problems fixed this weekend and look forward to seeing what is happening with your engine / cooling system as well as your alignment!
     

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