Anyone had a blown head gasket under normal driving?
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Joined: Jul 2012
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From: Rocky Mount, NC
Anyone had a blown head gasket under normal driving?
A month ago the t'stat stuck and car overheated and dumped antifreeze from tank. I replaced the T'stat & belts and was driving home Tuesday and it started bucking and gage was hot but no warning lights if any, so I stopped the car and it was bubbling in the tank and blowing some out the overflow.. Had it towed and radiator shop said block was not holding pressure. Would a leaking head gasket cause it to overheat if still had coolant, or did a faulty t'stat (just replaced) cause it to overheat and blow the head gasket. It did start bucking just before I cut it off and would not accelerate. I hope the shop did not blow the head gasket when they test drove it to see what was wrong.
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Registered User
Joined: Jul 2012
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From: Rocky Mount, NC
I'm just wondering if something was wrong with the previous T'stat fix to cause the exhaust gasket to blow or could the gasket blow w/o the engine overheating with 92,000 miles but this car has been oil changes only, except for the bad window regulator, now that was a weird one.
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A month ago the t'stat stuck and car overheated and dumped antifreeze from tank. I replaced the T'stat & belts and was driving home Tuesday and it started bucking and gage was hot but no warning lights if any, so I stopped the car and it was bubbling in the tank and blowing some out the overflow.. Had it towed and radiator shop said block was not holding pressure. Would a leaking head gasket cause it to overheat if still had coolant, or did a faulty t'stat (just replaced) cause it to overheat and blow the head gasket. It did start bucking just before I cut it off and would not accelerate. I hope the shop did not blow the head gasket when they test drove it to see what was wrong.
http://www.nicoclub.com/service-manu...5_G35_Sedan/co
See page CO-6
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There's only two reasons I've ever seen a blown head gasket:
1. Very high boost, like +20# without doing deck work to the block.
2. Overheating, and it usually warps the head enough on the first overheat to blow the gasket but sometimes it can take a while (weeks) for the gasket to finally fail.
1. Very high boost, like +20# without doing deck work to the block.
2. Overheating, and it usually warps the head enough on the first overheat to blow the gasket but sometimes it can take a while (weeks) for the gasket to finally fail.