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Old 04-14-2011, 07:57 AM   #20
infernosg
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Quote:
Originally Posted by RETed View Post
I see the tear - it's trash; replace it.
The system has to be airtight - a tiny leak like that will compromise it's effectiveness.
New cap already ordered!
Quote:
Originally Posted by RETed View Post
15psi is about as high as I would go.
20psi is way too much pressure - in fact, most cooling system will start to leak all over the place.
Remember, the stock radiator cap is only rated to 0.9 bar(?), which is like 13psi.
Yeah, I was a little nervous about the 20 psi. My hope was I'd expose any small leaks by really forcing the pressure. I did not start the ar yesterday, but I will tonight and I'll be sure to look for any white smoke from the exhaust indicating I managed to force water into the combustion chamber.

Quote:
Originally Posted by RETed View Post
15psi drops to 14psi is okay in my book.
This pretty much eliminate a major water jacket o-ring failure.
Yep, it was a VERY slow, seemingly unsteady leak. Not ideal, but like you said, certainly not a major o-ring failure. It probably would have continued to drop some, but I was running out of daylight...
Quote:
Originally Posted by RETed View Post
Replace the cap...
Burp all the air out of the system...
I think your engine should be okay...
Cross fingers!
This is the plan, along with a new thermostat. I'm considering a new water pump and belts as well because I'm pretty sure they're the original parts.

-Ted[/QUOTE]
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