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General Category >> Rubber Side Down! >> Pilot valve stuck
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Message started by wheelbender6 on 07/03/22 at 16:23:30

Title: Pilot valve stuck
Post by wheelbender6 on 07/03/22 at 16:23:30

i was trying to remove my pilot jet yesterday without removing the carb.
I could not loosen the pilot jet and I may have twisted off the head. Fortunately, the bike still runs good.
I realize I will have to remove the carb to swap pilot jets. Do they make an easy-out that small?

Title: Re: Pilot valve stuck
Post by DragBikeMike on 07/03/22 at 16:30:02

What is a "Pilot Valve"? Are you referring to the idle mixture screw, or possibly the pilot jet? Is the part accessible from the outside of the carburetor, or do you have to remove the float bowl in order to gain access? Can you post a picture?

Title: Re: Pilot valve stuck
Post by Dave on 07/04/22 at 03:30:25

If we are talking about jets....both Main and Pilot - I discovered a way to get out the really tight ones.

Use a flat headed punch - hold the carb in one hand or between your knees while seated. Hold the punch up against the bottom of the jet, and give the punch a couple of sharp wacks with a small/medium sized hammer. The jet should then loosen easily.

If you have damaged the screw slot then use the punch/hammer routine prior to trying a drill and easy-out.

Title: Re: Pilot valve stuck
Post by wheelbender6 on 07/04/22 at 03:39:01

I meant pilot jet. i guess I was still a bit wound up from the misadventure.
I did drop the float bowl but I did not remove the carb.

Initially, my screw driver was a little bit too long. I think that is when I damaged the head of the jet. I later cut down the length of the screw driver for a better fit, but could not remove the pilot jet.

Title: Re: Pilot valve stuck
Post by Dave on 07/05/22 at 03:40:03

It doesn't surprise me that you could not remove a pilot jet with the carb still mounted on the bike......they can be really tight the first time you take them out. I am not sure if they are originally installed tight - or corrosion makes them hard to remove.

Once you have it removed the first time - just snug it up after that and don't make it really tight. Jets vibrating loose is not very common.....but I have heard of it a time or two.