Re: Odd overheating issue (and oil question)
madmanguruman@gmail.com wrote:
> oh yeah ... there is slow bubbliing in the overflow reservoir. you'll get purging after a flush and refill. come back in a few days and check again. if it's still doing it, the head gasket's definitely gone. |
Re: Odd overheating issue (and oil question)
i checked the rad this morning (after an overnight cooldown) and there
definitely was some air in there. i topped up with some more pre-mix and will recheck tomorrow. |
Re: Odd overheating issue (and oil question)
just to bring closure to the story:
i noticed a little bit of play in the temperature gauge, but it never exceeded the midpoint reading throughout the week. the overflow tank level seemed a little high, and the bubbling did stop after 3 days worth of driving (a few hundred km). when i was able to get the car to my usual mechanic, he was able to quickly diagnose a faulty radiator cap as the cause of the overflow tank level not being right. he postulated that the overheat events caused by the 'improvised' thermostat likely contributed to a cap seal failure, preventing the rad from venting into the overflow tank. there was no issue with compression, so the head gasket is most likely fine (as fine as a 16 year old head gasket can be, at least). i replaced the cap, and everything seems to be in order now. a few weeks' worth of panic and uncertainty were corrected with some elbow grease, some internet research and $40 worth of parts. thanks for the opinions, all! |
Re: Odd overheating issue (and oil question)
madmanguruman@gmail.com wrote:
> just to bring closure to the story: > > i noticed a little bit of play in the temperature gauge, but it never > exceeded the midpoint reading throughout the week. the overflow tank > level seemed a little high, and the bubbling did stop after 3 days > worth of driving (a few hundred km). > > when i was able to get the car to my usual mechanic, he was able to > quickly diagnose a faulty radiator cap as the cause of the overflow > tank level not being right. he postulated that the overheat events > caused by the 'improvised' thermostat likely contributed to a cap seal > failure, preventing the rad from venting into the overflow tank. there > was no issue with compression, so the head gasket is most likely fine > (as fine as a 16 year old head gasket can be, at least). > > i replaced the cap, and everything seems to be in order now. a few > weeks' worth of panic and uncertainty were corrected with some elbow > grease, some internet research and $40 worth of parts. > > thanks for the opinions, all! thanks to you for posting follow-up. resolution is very good for the archives. |
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