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Message started by mung on 10/25/08 at 15:05:45

Title: Carb Woes
Post by mung on 10/25/08 at 15:05:45

I have my carb modded and exhaust replaced and the bike was still backfiring a lot. I was trying to adjust the mixture screw and stripped it. I then tried the cool Craftsman screw remover tools and because the screw is so darn soft it is just eating it up. I don't know if I have messed up the body of the carb itself at this point but probably did. Is there anything I can do about it or is it time to buy a new carb?

Title: Re: Carb Woes
Post by serowbot on 10/25/08 at 15:34:53

At this point, what's boogered is boogered so, you might as well get that sucker out and find out. If you can...
I'd try chiseling a small tipped flatblade screwdriver down into the soft brass, and then crank it out with visegrips. Use wd-40 or penetrating oil.
Hope for the best...
If you can wait a bit, someone else might have another idea.
Good luck

PS, I think there's a spring under there.

Title: Re: Carb Woes
Post by LANCER on 10/25/08 at 18:06:34

6A726960070 wrote:

How far down into the hole are you? Or how much of the screw is now gone? Can you see any of the remnants remaining of the screw in the hole?
I have had some success with bad situations...no guarantees but I may be able to salvage the carb.
Give me a holler if you want to discuss it.

Title: Re: Carb Woes
Post by mung on 10/25/08 at 23:41:09

I can still see some of the screw. Not much though. I can probalby take a picture of it if that would help.

Title: Re: Carb Woes
Post by LANCER on 10/26/08 at 04:10:02

2D352E27400 wrote:

I can still see some of the screw. Not much though. I can probalby take a picture of it if that would help.

Give the pic a try and post it here

Title: Re: Carb Woes
Post by mung on 10/29/08 at 16:27:17

It won't let me upload the pic because it says it's too big even though it's only 25K. It doesn't look that great anyway.

So any suggestions on how to try to fix the thing?

Title: Re: Carb Woes
Post by saluteTOme on 10/29/08 at 16:37:19

I say just to yell at it and demand it should come out and count to 3 if you really have to.

;)

Just subbing to see what happens.
hope all goes well.

Title: Re: Carb Woes
Post by LANCER on 10/29/08 at 19:30:46

You surely do need to be careful if you do any more, cause once past the threaded portion of the screw the size of the screw body gets a lot smaller real quick and damage by drilling or chiseling is easily possible.

Title: Re: Carb Woes
Post by mung on 10/30/08 at 07:26:41

So what should I do? Keep drilling? Some other tactic?

Title: Re: Carb Woes
Post by LANCER on 10/30/08 at 08:10:15

3B233831560 wrote:

So what should I do? Keep drilling? Some other tactic?

Depends on how gutsy you are. If you want to continue drilling you need to go very slowly, use a drill size that is just a hair smaller than the threads in the carb body, and go down just enough to clear the last thread. At that point you may be able to get a small needle nose or little pick of some kind down inside the hole to get a hold on the spring and pull it out, and hopefully the rest of the screw as well. If that goes well then you need to get a tap and very gently clean out the threads. If successful, you can then install a new screw, spring, washer and rubber o-ring.

If you are not up to it I would be happy to try to do it for you. No guarantees, but it is worth a try.

Title: Re: Carb Woes
Post by mung on 10/30/08 at 09:16:27

Maybe it would be good to have you do it and maybe check out the rest of the carb for me to make sure it's OK. I will pay you for your service of course.

send me your address to mung@highwayusa.com and I will ship it out to you.