i have a woods piston and the 425lift cams. have had the piston for about 8 or 9 mos. have checked the compression at ds mikes house before a few months ago and read 195psi if i remember right. today i decided to check my compression. fired it up ran it for about 10 min and checked it,got a 120psi reading. had the carb opened up and everthing.then i decided to do the oil in the cylinder check, put it in bumped it over 4or5 times and got 150psi . pulled radiator cap no pressure, so im assuming its not a head gasket. if it was rings wouldnt it go up more than this? any other opinions would be be appreciated!!! please post you thoughts![img]i/expressions/face-icon-small-sad.gif[/img]

 

last time i checked the clearances were about 7 thousands on the cams so im assuming the valves are not staying open![img]i/expressions/face-icon-small-sad.gif[/img]

 

kinda dumb question , but did you disable the compression release mechanism? also don't assume you have the proper lash, double check everything.

 

no i didnt release the decompressor. i did this with the valve cover still on. should i have?

 

only if you want to get a real reading of your cylinder pressure[img]i/expressions/face-icon-small-happy.gif[/img]

 

well that explains a few things going threw my head. drop and give me 50 major for making me look like an idiot! jk thanks man[img]i/expressions/face-icon-small-smile.gif[/img]

 

with this piston and the decompressor disengaged what should my reading be approx?[img]i/expressions/face-icon-small-smile.gif[/img]

 

False advertising i see roster. LOL ADD THE NOS or spend the 100 dollars[img]i/expressions/face-icon-small-smile.gif[/img]

 

still waiting on my loan from the trailer park leader!!

 

IF you were at 195psi before you should still be in that range.