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Elementary leak down test (850, 93) 850

posted by  Shaughnessy on  Wed Dec 24 11:45 CST 2014
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last visit: Fri Oct 3 23:53 CST 2014
[RELATED]

I performed a rudimentary leak down test (straight from the air compressor, about 20 psi).

No sound or wind coming from oil filler cap, or radiator reservoir. Didn't check the intake valve yet, but I did hear it at the exhaust (and I felt it).

I watched Eric the Car Guy's video on leak down tests, and he said that air heard/felt at the exhaust pipe would be an exhaust valve leak (? I think thats what it was..I'm not at the video right now).

I will re-test it later today (I have errands) and hand cycle the engine to DTC in cylinder #1 again, and post results.

--
1985 245. 246K Gone..but not forgotten.








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    Elementary leak down test (850, 93) 850

    posted by  someone claiming to be Dg on  Sat Dec 27 10:26 CST 2014 [RELATED]

    http://www.tuneruniversity.com/blog/2011/05/check-your-engines-health-with-a-vacuum-gauge/








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    Elementary leak down test (850, 93) 850

    posted by  Shaughnessy on  Wed Dec 24 15:41 CST 2014
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    last visit: Fri Oct 3 23:53 CST 2014
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    So I re-did the leak test again, making 100% certain everything was in it's proper place (I think the cylinder wasn't TDC as I thought it was).

    This time, it wasn't coming out of the exhaust, or radiator or the oil filler cap (which I believe is a sign that it's not rings).

    However, it DID come out of the part that is in the picture i'm (hopefully) going to link here.

    Hopefully these work (they're on facebookbut i made it public)

    https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-9/10806214_10152964709896670_8014744870348278077_n.jpg?oh=242d9a80901f418f40a51d3bf1e9c930&oe=5533C588&__gda__=1426079548_04c70181e86253a2412e38e5b5f2c93b

    https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/10881562_10152964709926670_8240603545347407135_n.jpg?oh=c56747740cb7d50c9ea04fe471624681&oe=553450CD&__gda__=1425813400_d36be8ef4f8752295f66534b394b82b2

    http://tinyurl.com/plwlznq and http://tinyurl.com/odhjl35 are easier links. Hopefully they work.

    Anyways, where the screwdriver is pointing is where the air is coming out.


    --
    1985 245. 246K Gone..but not forgotten.








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      Elementary leak down test (850, 93) 850

      posted by  Shaughnessy on  Wed Dec 24 16:45 CST 2014
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      last visit: Fri Oct 3 23:53 CST 2014
      [RELATED]

      I decided to use a match to check for air coming out of the oil filler, and there was a little bit of air movement. Not a lot, and not nearly as much as there was out of the idle air control valve.
      --
      1985 245. 246K Gone..but not forgotten.







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