No Engine Compression
Posted May 26, 2002 - 11:07 AM
Posted May 26, 2002 - 04:51 PM
Just kick or roll it until it starts. Then it will be fine. There are several posts. Try 'lost compression' here, on the YZ426 and the 250F forums.
Posted May 27, 2002 - 02:02 AM
Posted May 28, 2002 - 01:14 AM
The valves get sticky and don't seat properly. I pulled the rocka cover off pressede o nthe valves everthing. Had to kick the absolute crap out of myself tyo get it going. As soon as it fired the valve came free.
Leave the bike at Top Dead Centre whenever you store it and you should be ok.
Posted May 28, 2002 - 02:45 AM
As Mark said, there has been recent discussion on this exact topic over on the YZ side.
Sounds like this problem is more common than I thought.
Just kick it untill your blue, then kick some more. Once it fires up and runs for a bit the problem seems to be gone.
Posted May 30, 2002 - 08:13 AM
In response I checked the valves which is a good thing because the dealership must have forgot as I had 4 tight valves.
Anyway, its good to know that my top end is okay. I'm still a little concerned about the kickstarter though as sometimes it seems to slip, like the ratchet is missig a gear or something.
I thought kickers tendedto break at the lever not in the engine.
Posted May 30, 2002 - 10:51 AM
Posted May 30, 2002 - 10:58 AM
Posted May 30, 2002 - 12:05 PM
- Squirt a small amount of engine oil into the combustion chamber via the spark plug hole
-Roll down a hill to bump-start
or kick it lots (as described).