correct. thats usualy a good way to figure out if a piston ring is worn out.

also, remember that consistency between cylinders is more important than the actual number. the actual number will vary on the amount of times you crank the motor, etc. anything over 20psi between cylinders and you have a problem

 

You absolutely have to open the throttle, otherwise the engine is trying to suck air through a straw and will give false readings.

 

with a 3mm headgasket i was at 195 across the board

 

Since you've heard these things, why did you ask for help on this forum. Just go ahead and do what you've heard and let it go at that.

 

way to be a dick about things

 

You deserved it.

 

I just did my compression test Sat. Warmed up the car and drove it around town for about 15 mins. Came back pulled all the plugs immediately and started the test. Cranked each cylinder 7-8 times and came back with 212 exactly across all 4 cylinders. Oh yeah I did not hold the gas down while I did it. 160 seems low.

 

wow 212? hmm thats a big difference. I think im going to test it two more times when i get the chance, once with no throttle and the next time wot. You have an 06 so the motor should be the same, i wonder if mileage has anything to do with the numbers i have 69 thousand and my clutch is deffinitely on its way out, but that shouldn't effect compression obviously.

 

I have a MY00 S2000 with 122K miles on it. My 06 is my Lotus Elise.