Psalm31.24
Member
- Dec 5, 2002
- 147
- 0
I've got an 02 YZ 250.
I determined that the right side crankcase was leaking transmission oil into the engine and cause the plug to foul (read the "deeply confused" thread in this forum for how I determined this).
I replaced the oil seal & fired up the bike and the exact same thing happened -- fired up perfectly on the first kick, then fouled the plug once it was in gear.
Here's what I did . . .
I wiggled the gear shaft and there was no play. When I installed the new plug, it was such a tight fit I had to use a mallet to pound it in. I stretched the lining of the seal in process as the seal went in at an angle (could this be enough for the seal to lose it's ability to seal?) I seated the seal so it was flush with the brim of where the seal goes.
Did I do something wrong? or Did I misdiagnose?
thanks.
I determined that the right side crankcase was leaking transmission oil into the engine and cause the plug to foul (read the "deeply confused" thread in this forum for how I determined this).
I replaced the oil seal & fired up the bike and the exact same thing happened -- fired up perfectly on the first kick, then fouled the plug once it was in gear.
Here's what I did . . .
I wiggled the gear shaft and there was no play. When I installed the new plug, it was such a tight fit I had to use a mallet to pound it in. I stretched the lining of the seal in process as the seal went in at an angle (could this be enough for the seal to lose it's ability to seal?) I seated the seal so it was flush with the brim of where the seal goes.
Did I do something wrong? or Did I misdiagnose?
thanks.