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Thread: A20A1 small oil leak coming from rear of motor

  1. #1
    DX User RI86DX's Avatar
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    A20A1 small oil leak coming from rear of motor

    As the title says. It's dripping down onto a hose of some kind (heater hose?) and my PS rack. Seems to only leak when the car's been sitting for a while after being driven. Any ideas?
    Last edited by RI86DX; 08-01-2022 at 11:01 AM.



  2. #2


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    Re: A20A1 small oil leak coming from rear of motor

    hard to say with out a picture but the distributor has an O ring seal that can leak oil out.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

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  3. #3
    DX User RI86DX's Avatar
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    Re: A20A1 small oil leak coming from rear of motor

    Quote Originally Posted by Oldblueaccord View Post
    hard to say with out a picture but the distributor has an O ring seal that can leak oil out.
    Was thinking the dizzy O ring or the 2 seals behind the tbelt cover, those seem to be very common spots for both the A1 and A3 to leak oil from.

  4. #4


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    Re: A20A1 small oil leak coming from rear of motor

    If it is really just the rear of the engine...towards the firewall. The oil filter housing has a figure 8 O ring that can go bad.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

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  5. #5
    DX User RI86DX's Avatar
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    Re: A20A1 small oil leak coming from rear of motor

    Quote Originally Posted by Oldblueaccord View Post
    If it is really just the rear of the engine...towards the firewall. The oil filter housing has a figure 8 O ring that can go bad.
    Alright, I'll keep that in mind as well.

  6. #6

    Dr_Snooz's Avatar
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    Re: A20A1 small oil leak coming from rear of motor

    Don't forget about all the PCV hardware back there that develops leaks.
    Dr_Snooz

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  7. #7

    Re: A20A1 small oil leak coming from rear of motor

    Check the oil pressure switch.
    Pcv is also through the rear, specialty hose with two different IDs
    Eric
    3geez member since October 12, 2000
    "All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau

  8. #8
    DX User RI86DX's Avatar
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    Re: A20A1 small oil leak coming from rear of motor

    Thanks for the tips, ever since I had a new pan/pan gasket put on the car the leak has become really tiny. It was a lot worse before then. BTW is synth blend oil bad for these cars? Paranoid that it's going to gum my motor up or make it leak even more oil.
    Last edited by RI86DX; 08-20-2022 at 10:59 PM.

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