What Is A Leak Down Test???
05-31-2006, 10:55 AM
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What Is A Leak Down Test???
Can someone tell me what a leakdown test is and what the benefits are. What is the difference between a leakdown test and a compression test?? Sorry for my ignorance. Any offshorers out there that can inform me? Thanks!! 
05-31-2006, 12:56 PM
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Re: What Is A Leak Down Test???
A leakdown tester is a where the each cylinder is pressurized with air 100+ lbs. The engine is not running and a strong person holds a breaker bar on the crank. The measured rate of air going past rings and valves at TDC will tell you the condition of an engine. By far a better test than simple compression. It is the only way to test a two stroke. I have seen 2 stroke engines with good compression, but a lot of leakdown that ran like garbage they were so worn out. The unit is not that expensive. Requires an air compressor source.
05-31-2006, 01:24 PM
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Re: What Is A Leak Down Test???
also can tell you if you have any problem in the valve train(burn valve or carbon deposit) as well as a good pin point to blow head gasket diagnostic, just my $0.02
05-31-2006, 01:51 PM
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Re: What Is A Leak Down Test???
Originally Posted by orss
also can tell you if you have any problem in the valve train(burn valve or carbon deposit) as well as a good pin point to blow head gasket diagnostic, just my $0.02
