90V6RedHotLuminaEuro Posted November 4, 2011 Report Share Posted November 4, 2011 My Best to All... How Do You Do A Compression Test on a 3.1/V6? What is the correct method to get accurate readings... and what readings/numbers should one get from a healthy engine? John B. Quote Link to comment Share on other sites More sharing options...
Mater Posted November 4, 2011 Report Share Posted November 4, 2011 take out all the plugs. hold the throttle fully open and crank the engine over 5 revolutions. easier to do this with a helper all readings should be above 100psi and with in 10% of each others the reading should be close to 160psi Quote Link to comment Share on other sites More sharing options...
90V6RedHotLuminaEuro Posted November 4, 2011 Author Report Share Posted November 4, 2011 Thanks so much for that... I hate getting at them rear plugs... but it has to be done. John B. Quote Link to comment Share on other sites More sharing options...
BXX Posted November 4, 2011 Report Share Posted November 4, 2011 Don';t worry aboot it, I daily drove a 3.1 Vert with aboot 60psi compression with no issues other than lower power and good gas mileage:lol: Quote Link to comment Share on other sites More sharing options...
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