Re: Chevy 350

Posted by Mark - IN. on November 08, 2004 at 05:43:26 from (152.163.101.7):

In Reply to: Re: Chevy 350 posted by Allan in NE on November 08, 2004 at 02:04:25:

Good morning Allan, a man that reasons, and a man after my own heart.

You are exactly correct. If does turn out to be a head gasket, that could cause some warping in the head, often corrected by decking the head(s) .005 if that occured. It's a common practice.

One thing's for sure, if it's a gasket problem (much cheaper than...), there's only two gaskets that will allow coolant into the cylinders/cumbustion chambers: Intake manifold, or head. Since he's blowin' out the tailpipe, he's got one (if it's a gasket).

The reason I tend to believe it's a head, is because he's overheatin' as well. That's a symptom of compression back into the cooling system. Wonder what his radiator cap pressure looks like? Should be in the teens (not higher). Higher would also suggest a head gasket.

If were just an intake manifold gasket, and runnin' lean (overheating) in addition to suckin' coolant, then I'd think would be suckin' air around the top of the manifold where meets the head. If that's the case, could run a garden hose drip along that edge while it's runnin', and it'd suck the water in, motor would spit and sputter as water tries to mix with the fuel mixture. If the gasket were leaking from below (oil gallery), then probably wouldn't be runnin' lean, because would be sucking oil vapors from the crank case, which you know is very volatile (burns/explodes pretty good).

I'm thinkin' head gasket from the symptoms, but could get lucky and have it only be an intake manifold gasket. In any (either) event, don't forget to change that oil afterwards - a body needs good rich blood, and so does a motor.

Have a great day Allan, I've gotta get to work. Just tryin to help, as most do and have, but I'm still waitin' for a suggestion from that other guy though.

Follow Ups:

• Re: Chevy 350 Mike (WA) 08:20:31 11/08/04 (1)
  • No, it wasn't you Mark - IN. 15:01:14 11/08/04 (0)

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