what compression reading should I have on this atv for min. ? I had an oil cooler line break and it ran out of oil. I replaced the line but it won't hardly run since.
Any ideas andf what is min. compression ?
Thanks,
D.

 

Most engines should have at least 100 lbs to run.........may run with 90 not too sure.......My comp tester I use for the sleds is showing RED on the guage at 90 lbs.....100 is min on my guage!!!........Caper...........

 

A cylinder leakage test is a WAY better test for four strokes, especially ones with an automatic compression release. I would say if it's running good and you break an oil line, and then it doesn't run good, you have engine problems. Is it knocking? Hopefully if there are engine troubles they are piston, cylinder related and not the connecting rod or crank. They get spendy. Did you checkl compression on it? What was the reading?

 

around 85-90 lbs.

 

Sounds like you toasted the rings.When you do the topend you may want to tear the lower end down too.The 325s had weak rod bearings and starving them with a busted oil line couldnt have done them any good

 

Be a good time to call Rick Ritter and talk to him about a 414 kit too. [img]i/expressions/face-icon-small-wink.gif[/img]