Originally Posted by 5italkart
i have an older picco 21 i think they were sold by serpent. i got it with a 950. i put it in a new 966. can't get consistent idle , hard too start and no bottom end response. rough start too my 1/8th campain. i have already cleaned out the carb no change.
If you're having trouble with an inconsistent idle and not much bottom end response you may have a motor that has lost its pinch. You may want to replace the piston, sleeve and con rod or just purchase another motor. Once you have a motor with idle problems and you know the carb and o-rings and seals are all good then more than likely it's time to rebuild. Once the pinch goes away this tends to happen.