gonna do a compression test on my car one day next week while im doing header and spark plug/wire install. should it read a certain number on the guage or just be close across the board. im just doing all the troubleshooting i know to do to try n get this thing running right. i read somewhere that its more accurate if you squirt a lil oil in the cylinder is that true? also read that you need to get the engine to operating temps is that true? i sure hope not cause its a pain getting spark plugs in and out as it is.

 

http://shbox.com/1/4th_gen_tech2.html#compression_test