[Smoove1010]

Thank you Mr. Zimmerman for passing that along. Would you care to weigh in on the compression test procedure, i.e., plugs in or out?

For the reason you cite, it seems like it would be best to perform the leakdown first, followed by the compression test.

As I recall, the engine has to be at operating temp for both tests to be accurate. I'll have to work fast and wear long sleeves!