Quote:
Originally Posted by Spuds
I haven't gotten down to that one on the 'crap I need to deal with' list yet since its really not that bad. Any reason not to go straight to a leak test?
Lol I was responding to this last night, but fell asleep mid-post.
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99.975% of the time, an otherwise good cooling system will fail to maintain pressure because of some shit causing a pinhole leak in either of the valves on the radiator cap. If it can't maintain pressure it'll start simmering somewhere on the engine. The bubbles collect at the top of the radiator and bleed out the cap instead of fluid. With each heating/cooling cycle a little more of the liquid coolant is pulled back into the system.
I wouldn't consider a leak check until after eliminating the radiator cap.