fuel mixture screw seized

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fuel mixture screw seized

Postby liamol » Tue Apr 03, 2018 3:37 pm

Hi all,
Having been a lurker on this site for a long time and have found much useful information, I have a question to ask.

The mixture screw on the left carb is seized solid, so I have managed to remove the plug on the right carb. 1990 model.

As I don't actually know what setting the left one is stuck at, how do I go about setting the mixture?? Bike is really difficult to start at the moment, runs poorly and intermittently on full choke, but any adjustment of main idle screw kills it

Cabs have recently been rebuilt, I have no-idea why I didn't try to address this when the feckin things were off!! Completely forgot until now that I try and do this...

Any help would be great.

Thanks

Liam
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Re: fuel mixture screw seized

Postby BigBob » Tue Apr 03, 2018 6:11 pm

Pilot screw setting is one and a half turns out. However, whatever it is set at shouldn`t affect how it runs on full choke.
I would suggest your problem lies elsewhere. When you rebuilt the carbs did you use OE items or aftermarket parts that were most probably Chinese rubbish?
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Re: fuel mixture screw seized

Postby liamol » Tue Apr 03, 2018 6:47 pm

Thanks for the reply Bob.

It has been ages since I actually did the rebuild but from memory I got a kit from wemoto, so not genuine parts (I don't think anyway).

I hoped this wouldn't be the reply.

Thanks though.

Liam
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Re: fuel mixture screw seized

Postby liamol » Sat Apr 07, 2018 3:50 pm

Just to correct myself, jets etc are all suzuki items...

i had the cabs off and all proper sizes etc, any other ideas please.

Still doing the same will start on full choke but dies without it??

Thanks

Liam
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Re: fuel mixture screw seized

Postby ladder106 » Tue Apr 10, 2018 2:44 am

Liam,

The bike is acting like the pilot jets are clogged.

What, exactly, do you mean when you say the carbs were rebuilt "recently"? And during the period between the rebuild and now, has the bike sat with petrol in the carb bowls?

With the current state of what they call petrol, I've seen bikes that have sat only through the winter that would not run in the spring until the pilots were either cleaned or replaced.
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