Compression during break-in
Posted November 14, 2002 - 08:40 AM
I have driven my bike for that 1 (1) test hour & break in and operation checks that the manual recommends.
But when the kickstarter hits the TDC, i can move past that position just by Forcing it past with a little muscle... but from what i heard you should be able to jump on the kick starter on TDC without it moving past..
Now to the real question, is there a time during the break-in where the rings dont seal so well, so that air can slip past the rings when i push it with my hand, that its not fully broke in yet... or is something wrong?
Im really worried and you Gurus is sitting upon the answer
You guys always got the answers and by this message i must state that the spirit of this forum(s) are great, i would gladly help someone if i could *sigh*
Posted November 14, 2002 - 09:14 AM
One thing you might want to check is the decompression lever. Make sure there is some free-play in the lever so that the cable is not too tight. It sounds to me like you are loosing compression somewhere, unless you compete in the world's strongest man competition. Keep us posted.
Posted November 14, 2002 - 10:23 AM
But still i can't stand on the kickstarter .. it will follow through. and i can push it down if i use force..
Any ideas? is something wrong ?
Cause everyone says you can stand on the starter without it moving, but i can't!
Posted November 14, 2002 - 01:13 PM
It took about 1000 kilometres before I could stand on my kickstarter without it just slowly turning over under my weight. Once its fully broken in your compression should increase as the rings bed in.
If its still running ok then it cant be that bad anyway.
see how it goes after a few good hard rides.
Posted November 14, 2002 - 01:21 PM
Posted November 18, 2002 - 08:06 AM
Posted November 18, 2002 - 10:28 AM
If the valves are getting tight it won't idle and loose power. If the bike runs okay, change the oil and ride it some more. Check valves after 10-15hrs or so.
I could force the kicker down with my hand on my WR400 when it was new too.
When I checked my valves after break in only 2 were .001" tight.
No problems in a year of riding.