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Originally Posted by DougG
when you start from cold and are looking for "burps", how long should you wait before you start to see bubbles? I looked at my expansion tank for 3-5 minutes and no bubbles. This must be a good thing. I have a faint coolant smell inside the truck(88RRC 144K miles) when I'm driving it. Must be a leak somewhere externally.
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Doug, I don't remember exactly. But all the signs that have been talked about in this thread were there. When i rebuilt my engine, both headgaskets appeared to be original and both were leaking for sure. My advice to anyone is to have it tested so you know for certain.
If you do have a blown headgasket, I wouldn't put off fixing it for very long. Even a small leak will slowly kill off the detergents in your oil and accelerate wear. I would refrain from all the over the counter medicaitons you can add to your coolant too. Personally i would only use that stuff to make it home from the bush. Anyway, there are some bad things that can happen if you have a badly blown gasket, and they usually happen at the worst possible moment. Good luck.
