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scicala · 01-20-2020, 05:57 PM

5% is considered good. You can also hear where the leakage is going by listening at the oil fill cap opening, the intake, or the tailpipe. Also bubbling in the radiator if it's a head gasket or crack.

Sal

01-20-2020, 05:57 PM	#2
scicala Senior Member Join Date: Jun 2010 Location: Detroit suburb, MI Posts: 3,698	Re: Leak Down tester issue? 5% is considered good. You can also hear where the leakage is going by listening at the oil fill cap opening, the intake, or the tailpipe. Also bubbling in the radiator if it's a head gasket or crack. Sal