How do i check if it is intake or head gasket?

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How do i check if it is intake or head gasket?

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Blazer Forum >> Modifications >> Performance & Brainstorming >> Engine & Internal >> How do i check if it is intake or head gasket?

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How do i check if it is intake or head gasket? - 5/10/2007 11:04:39 AM

jamiesenna

Posts: 1
Joined: 5/10/2007
Status: offline

I have a 1997 blazer, it runs with a slight stumble. It has oil milk shake in the air box. I would think this is a intake gasket or do you think it is a head gasket. Any ways to test either way? Thanks jamie

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RE: How do i check if it is intake or head gasket? - 5/10/2007 11:14:23 AM

swartlkk

Posts: 14530
Joined: 5/1/2005
From: Waterloo, NY
Status: offline

How in the world did oil/coolant get into your air box???

How does the oil in the crankcase look? Have you tried to do a compression check on each cylinder? If you have good & consistant compression on all cylinders, then your headgaskets are mostlikely fine. If you find that one cylinder has low compression, try squirting a shot of oil into the cylinder and cycling it a bit with the starter. Then recheck the compression. If it jumps up, then you have worn rings.

If you do have a head gasket problem, then you may be able to see bubbles in the radiator (if it's full) when the engine is running.

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RE: How do i check if it is intake or head gasket? - 8/4/2007 11:35:22 AM

Dave N

Posts: 1
Joined: 8/4/2007
Status: offline

Compression test and a leak down test are the first tests you should do. You can also do a simple block test to find out if you have exhaust gases in your coolant. You can buy the kit from NAPA or find a shop that does it. It only takes about 2 minutes to do. If the heads are the problem, make sure you have them magnafluxed to check for cracks. They can crack around the seats and into the water.

(in reply to jamiesenna)

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