No oil --> knock

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Jun 30, 2007 | 04:49 PM

#51

nelapse

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Posts: 2,716

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From: Mobile, AL

Car: GTA

Engine: 383 HSR

Transmission: TH-700R4

Axle/Gears: 3.42

Re: No oil --> knock

Quote:

Originally Posted by Sonix

Drained the oil, yep, greenish.
Ripped off the intake - looks pristine.

I guess that means head gaskets

I couldn't find a cooling system tester within walking distance, so I can either bus it down and rent/buy a cooling system tester and put back on the intake and check that - or just buy head gaskets and re-do those.

I am very leery to replace that though, they seemed completely fine when I put them on...?

Any advice?

It is not the head gasket. If your head gasket was leaking coolant it would go through your combustion chamber and not your crankcase. If you are getting oil through the crankcase it is the intake manifold hands down.

It is a cheap fix.

Jul 4, 2007 | 10:01 PM

#52

Sonix

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From: Calgary, AB, Canada

Car: 1982 Trans-Am

Engine: 355 w/ ported 416s

Transmission: T10, hurst shifter

Axle/Gears: 10 bolt, true-trac, 3.73

Re: No oil --> knock

Well I was getting white smoke out the tailpipe as well.
So I replaced the head gaskets, and intake gaskets.

Fired it up tonight, within a few seconds, milky oil again. I'm really hoping that it's residual coolant in the crankcase... Somehow... I'm a wishful thinker.

I was going to just run it for a while, then drain the oil and replace the filter, and refill. But I think i'd end up doing that forever.

I think i'm going to go buy a pressure system tester, and then try that. It's tricky to find an internal leak though eh?
I guess if it doesn't hold pressure, then maybe I'll be able to hear a hissing sound, if it's real quiet out.