i have a 94 rm 250 that i have been working on for a bit, i think all my electrical problems are solved, but it isn't running quite right yet. i recently did a tear down and found that my exhaust valve was stuck again. the rod that moves the arm works fine, but there is a spring that has broken. can a exhaust valve be set wide open? would it still run? also when i took out the motor i sealed the intake boot with a bag and happened to turn over the motor and it showed a vaccume then it showed pressure. should the reeds seal tightly or just when its running (more back pressure to seal)? any help would be great! thanks :think:
94 RM 250 exhaust valve
- Thread starter jj canuck
- Start date
It will run with it set wide open but you won't have any low end power. I would rather ride with it closed than open if I had to choose.
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