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How Do You Do A Compression Test on a 3.1/V6?


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Posted

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.

Posted

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

Posted

Thanks so much for that... I hate getting at them rear plugs... but it has to be done.

 

John B.

Posted

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:

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