I need to step on the clutch too right when dooing compression test. I crank if 10 times and the reading is cyl #1=212 cyl#2=212 cyl#3=206 cyl=212 is this a good reading. When I'm doing compression test I heard a popping sound ones and never happen again in the entire process I dont know what is that. Thanks

 

an occassional popping sound is normal, atleast thats what I was told when I did it. Did you do it with the motor warm?

 

i get 205-205-205-205 in my 158k gsr, do it while your car is warm it will help with #s, and yes i always get a poping sound when im doing it.

 

I also heard your supposed to press the gas pedal down all the way, and have all the spark plugs removed.

 

yes, block open the throttle, and choke on carbureted engines...

but i think he knows how to do the test...