Jump to content
Sign in to follow this  

lost compression & got it back????

Recommended Posts

crossed a river yesterday, right as I got out of the river the bike stalled, heck of time getting it fired back up, and while trying to fire it back up it lost a lot of compression, changed plugs and took the filter off got rid of the water around that area, the bike fired up, and got its compression back, I dont understand that. My buddy said I probally had to much gas in the crank. Im not complaining, just wondering what happen?? any buddy know??

thanks]

dave

Share this post


Link to post
Share on other sites

I have had that exact scenario Dave. A bit of water might have entered the cylinder and stuck the ring for a bit. Once you get it running it frees up again. Never quite as good as it was is my experience, but it is running...

I don't know the exact mechanism for this loss of compression. Water wiping the face of the ring, water behind the ring getting it twisted into a port, I don't know. One dunking broke the lower ring on a 2 ring piston.

If the compression comes back on a single ring piston, run it until you feel like it needs a change. On a dual ring piston I'd be inclined to pull the jug to have a look.

Share this post


Link to post
Share on other sites

I don't know if 'cylinder wash', where too much fuel washes all the oil off the cylinder walls and you lose compression, can happen with a 2stroke??? Sounds like that is what you buddy was referring to.

Maybe with the filter being wet etc you couldn't suck enough air to compress??

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

×