almost no compression.... need help!!!!

[ossagp]

This one is beginning to take on a life of it's own isn't it??????

If you have a big enough loss of primary compression to keep you from getting enough transfer charge to even start by push starting, I think you will be able to hear where it is coming from. WOW! (what a revelation)

If you really think it may be the head gasket, take your radiator line off the head and kick it over while you or someone listens,,,since you can do it with your hand, it shouldnt be hard. If it doesnt have enough compression to start you should be able to hear it. (as in the air leaking into the colling system)

Since I seem to be having some trouble understanding what Flavor has done or hasn't done so far, I will ask, have you checked to see if you seized it?? I am not sure what you mean by taking it down, as in did you remove the cylinder since you suspected your phathead problems?


I am sure that replacing the lower end seals is a good idea on a 5 year old bike though, and all those test gizmos are fun and nice to have, but really, a compression loss that large wont need anything for me to find it.

But then again, what would I know lol,,,my bikes all run as they have for the last 35 years.

[2fun]

Thanks for posting that set up Hardly!
I would like to get that into the knowledge base when the thread has run its course!

[hardlydangerous]

No prob
Oh yeah remeind me if I forget... I have an awesome clutch holding tool setup that ANY ANYONE can easily make for very low cost. Works great for removing the clutch nut.

[CR-FLAVOR]

well, i built the leak tester, first pump i could hear air hissing out from the back edge of the rubber gromment that is part of the PV cover. the piston was at BDC as faded indicated it should be. that grommet was also brand new so im confused on how to correct it, gonna pull the cover off and take a look at the gasket later today. if anyone cares to take a look, i posted a pic and put an arrow showing to where the air is escaping.

[cr rider]

hey dont really no much just my own experience i split the crankcase in my cr 125 put it back together ran fine just died and wouldnt start again, could kick it with my hand same as youjust like yours pulled the cylinder off and one of the circlips that hold in the wrist pin had come out and reaked havoc on my piston and cylinder wall hope this is not your case good luck just thought id let you know still in the process of fixing mine so hope its something simple for you

[DRGSin393]

Im willing to bet he's fixed it by now. Check out the date. Dont feel bad, its been going on alot here lately. I reckon kids' brains are in summer mode still.