372xp low comp. bad decomp valve?

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hatchet13

ArboristSite Operative
Joined
Jan 18, 2012
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Location
bald mtn
Has any one had a decompression valve go bad ? I just bought this saw and it was susposed to be at 160 lbs of compressin but I checked it after it got to me and it took me a dozen or more pulls to get it to show 130 on my gauge witch is dead on accurate. Lookd at the p/c thru the ex port and everything looks in verry good shape not a scratch. Idk if it's just plum worn and needs some rings or if it's got a leak somewhere. Any ideas or input would be great


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Just tried cleanin the valve and checked it with soapy water no leaks still makin olny 130psi. I'm thinkin the guy I hit it forms gauge is off a bit
zebu6yna.jpg
because mine doesn't even come close to what that gauge is showin


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Here's my 2171 (same as a 372xp) with a brand new single ring Meteor piston and no base gasket. Just under 160 on my gauge.
image-jpg.360723
 
So if you are mechanically able put some new rings in her. Rings are cheap.
I don't have a lot of experience, but I can pull the jug off a 372xp pretty fast. It's pretty simple since you can pull the carb, intake, and cylinder in one piece.
image.jpg
 

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