I used a craftsmen compression tester and came up with the following. Seems ok for an engine with 38850 miles and in need of a valve adjustment.
#1 - 215
#2 - 230
#3 - 235
#4 - 230

Any reason why number one would be the lower of the cylinders or do these numbers seem alright? Also, when I checked the #2 I cranked about 5-6 times at WOT and first only came up with 197, then after checking the remainding cylinders I went back to #2, cranked 5 times again and came up with a final result of 230. Everything seem ok?

 

why don't you try number one again?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueR &raquo;</TD></TR><TR><TD CLASS="quote">why don't you try number one again?</TD></TR></TABLE>good point, although I figured it seemed to be in spec. I'll try again though to see what happens.

 

That's looks pretty normal for all the ITR's I've done a test on...right around the 230 mark.

 

a valve adjustment could clean up cyl 1 to even the compression with the rest

 

Do dealerships routinely do compression tests as a part of scheduled maintainence??

 

not that i know of, only if you specify

 

Mine were about the same, except #1 was a bit higher. I wouldn't be concerned, you do need a valve adjustment.... then do compression again.

 

With 85000 miles GSR: w/mild cams
230-225-230-230

 

Hehe...for good measure...
100k miles GSR w/stock cams
220-225 across the board

 

Did you guys crank it 7 times with the throttle plate opened? You're supposed to nail it seven times and it should go up at a even and steady pace. I cranked it 4 times without the throttle opened and i hit 250's and 260's all the way up.

 

you crank the car until compression no longer builds up, doesn't matter how many times. However, the fewer, the better.

 

Mine wasn't at WOT...I forgot do that when I did mine, but then again, I don't care right now because my numbers looked good.

And yes, you crank until it stops.