Thread: Not this again.
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Old 11-15-2017, 06:47 PM   #1395
The_Bishop
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Quote:
Originally Posted by LS1ow View Post
I had the rockers down snug with the pushords in for the leakdown and nothing got by the valves, it all came past the rings. You can clearly hear the air coming out of the crankcase(still had timing cover off) No hissing out of exhaust or top end. Wouldnt this verify pushrods are not holding valves open?
No, not really because when the lifters sit, they bleed down which will let the valves close. If you crank it with all the plugs out, it should turn over pretty quick, which will build oil pressure, which will get the lifters to do what they'd be doing when running. If the pushrods are slightly too long in a hydraulic lifter setup, it'll show in a compression test but not necessarily in a leakdown test.
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Quote:
Originally Posted by Blackbirdws6 View Post
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