Yah I tried that and didn’t work
I guess next step is to buy a new rad cap and put a air fitting and pressurize it to ten ish psi and try to find the leak
I hope it’s not my rad as it’s a copper rad
i got a vacuum pump for coolant system for christmas
i am having some problems
if i pull off the rad cap i can pull it down to -5 and when i turn off the vacuum it slowly goes back to zero
if i pull a vacuum on the upper rad hose removed at the rad i can get -25 ish
if i pull the lower rad hose...
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