Leakdown test on a cold motor
#1
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Can I do a leakdown test on a cold motor? The motor is out of the boat and I am unable to run it. Do you usually see higher numbers on a cold motor?
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Yes, leakdown past the rings will be higher, valves about the same. This would still be an indicator if one or two cylinders are markedly different.
#4
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A cold leak down test on an engine that has been running is fine. Percentage of leakage will be higher. If the engine has set some time it is a good idea to warm the engine up to free up an crystaliztion on valve seats and such.
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Originally Posted by mrhorsepower1
How many hours are on it?