From my understanding, a leakdown test is necassary only if your compression
tests poorly, and will further isolate any problems. My compression tests
came out good.
Matt Nelson
[email protected]
Seattle, WA
----Original Message Follows----
From: "Paul and Julia" <[email protected]>
To: "Matt Nelson" <[email protected]>
Subject: Re: blown engine?
Date: Thu, 13 Sep 2001 22:54:43 -0700
leakdown test
----- Original Message -----
From: "Matt Nelson" <[email protected]>
To: <[email protected]>
Sent: Thursday, September 13, 2001 9:48 PM
Subject: blown engine?
> So I was thrashing around my 91 GLi the other day, racing around all over
> the place like I usually do (i drive like an asshole) only extrodinary
hard
> this time (rpm into gas gauge kinda stuff), anyway, the engine started
> idling funny and blowing smoke afterwards. At first I though I skipped a
> notch on my timing belt (just replaced it last week so it could still be
> loose) one of the times I buried the tach, but I checked it and it lined
up
> correctly with TDC. Then I feared that it was a blown head gasket, so I
did
> a compression test. all 4 are 180, almost dead on (with plugs all out).
Now
> I'm a little frightened and stumped...please help.
>
> Syptoms:
> 1. Idle is rough, takes a long time to start, very different from before
> 2. Blows blue smoke out the tailpipe, i think it's blue, but i hope i'm
> color blind...grr
> 3. Has plenty of power still, almost exaclty the same after 2500rpm or
so,
> feel quirky below that, some misfiring if you listen closely
> 4. No new mechanical sounds in the head or block that I can hear
> 5 Timing moves around a little while idling, but I think this is normal
> computer stuff when there is something wrong, timing is the same other
than
> that.
>
> I have to admit that I'm a bit stumped by the compression test. I was
all
> set to replace a head gasket before that. Is it possible that a lifter
was
> damaged and a valve is stuck closed, thus keeping compression good? Has
> anyone ever heard of this happening or have any other suggestions.
>
> Thanks all.
> Matt
> [email protected]
> Seattle, WA
>
>
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