Author Topic: Engine dead?  (Read 2698 times)

E30nate

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Engine dead?
« on: April 13, 2008, 01:21:23 PM »
so yesterday my car started running like crap, and now it is blowing blue smoke out the tailpipe, which leads me to believe bad rings. so i did a compression test today, and it didnt look too good, but it didnt look horrible either.

when i first bought the car, it had 210psi across all cylinders, today it was as follows:

cyl 1: 175psi
cyl 2: 200psi
cyl 3: 175psi
cyl 4: 200psi

so is this bad, or could it be something else. i dont have the tools to do a leakdown test, but if i have to i can run and get them from harbor freight.

thanks in advance.

Nate

Wise Old Dog

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Engine dead?
« Reply #1 on: April 13, 2008, 03:48:23 PM »
For whatever reason either valves or rings are leaking. Squirt some oil in there and check it again to eliminate ring leak.
175psi isn't terrible, but you have a high percentage difference from the adjacent cylinder,ie more than 5%.
You're going to have to fix something, you just need to find out what.

E30nate

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Engine dead?
« Reply #2 on: April 13, 2008, 07:28:39 PM »
i took the head off, and found pieces of bearing on the TOP of the cylinder:eek:. so needless to say i need a new engine.

bmwpower

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Engine dead?
« Reply #3 on: April 13, 2008, 08:49:31 PM »
Quote from: E30nate;46952
i took the head off, and found pieces of bearing on the TOP of the cylinder:eek:. so needless to say i need a new engine.


pieces of bearing?  WTF?

What do you think it's from?

E30nate

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Engine dead?
« Reply #4 on: April 13, 2008, 10:12:59 PM »
thats exactly what i thought. WTF? the only thing i could think of is maybe the piston skirt broke and let it by on the downstroke. after i get a new engine i will take this one apart and check it out.

kowalski

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Engine dead?
« Reply #5 on: April 13, 2008, 10:19:04 PM »
Quote from: E30nate;46952
i took the head off, and found pieces of bearing on the TOP of the cylinder:eek:. so needless to say i need a new engine.

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