I have a 1998 Harley Davidson Super Glide 1340 cc. 5 speed.
I have strong puffs of air coming from the rocker box front jug, front tube when i pull down the push rod tube to check sdjustment. I cranked over the motor and heard and felt this. I cranked over the motor to watch the operation. None of the other tubes on the engine does this. Is this normal?