Posted by Tim in ny [74.209.22.117] on Wednesday, August 06, 2014 at 00:02:23 :
In Reply to: how to run compression test posted by George in MIchigan [174.125.89.26] on Monday, August 04, 2014 at 22:29:42 :
A little tip I found out the hard way. Make sure the tool does not thread in ANY further than the spark plug does. You'll bend a valve.