Gregg Miller

If there was a leak, would it be pushing air out, or sucking it in? (i.e. what should I be looking for when I spray the wd40?)

Yeah, I can ride it with the choke on, but it's not great (tends to stall after a while and at faster speeds or higher gear) I've had the carb completely apart and cleaned it several times. I used compressed air on all the jets to clear them out. I tested the rubber boot for leaks by actually putting it over my mouth and sealing the other end with my hand and couldn't get any air leakage.

My CT 175 used to run great, after some time in storage, it starts up perfectly and will run ok with the choke on, but as soon as I push the choke in (to turn it off), it revvvs like a maniac and stalls. Two different people told me that it had to be a leak in the rubber boot, but I've checked and rechecked and don't think there's a leak there anywhere. Any other ideas?