Quote:
Originally Posted by oldskewel
I think the theory is that you have some sort of seal failure between cooling and combustion - maybe HG, maybe crack, maybe head bolt torquing issue.
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Correct. It's got to be one of those things. Unfortunately, those are all deal breakers save the head bolt torquing which is PRETTY much a deal breaker. i do have a spare set of head bolts but i have used 98% of my allotted time for this project.
is it possible there is on obstruction in the system somewhere? Namely, the expansion tank? could that cause these symptoms?
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2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.2019) -> 100k (9.2021) -> 123k (8.2025)
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SOLD : 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.2019) -> 205k (9.2021)
SOLD : 1997 328is Coupe - Hellrot Red
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