Question about 1989 Suzuki GSX 1100 FJ (Katana)

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1989suzuki 1100 carbs slides on 1-2will not raise

Slides on #1&2 carb won't open

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Posted on Jan 02, 2017

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Google motorcycle salvage yamaha and see what you can find there.

I looked at Babbitts and none are left. You may need to contact the manufacturer and ask for new carbs that will fit.

Posted on Sep 25, 2009

  • 36 Answers

SOURCE: #1,2 carbs slides won't raise when throttlr is

tighten the scews that lift the slides . need to remove carbs to access these .

Posted on Aug 08, 2010

  • 167 Answers

SOURCE: My 2002 V-Star 1100 Classic

I can't solve this(there are litaraly hundreds of things it could be) BUT I can give you a way to narrow it down a bit.
I'm thinking it may not be running on all cylinders and an easy way to check is to start the bike from cold(do this test in the first few seconds after starting from cold DONT BURN YOURELF),put a bit of spit on your fingers and quickly touch each exhaust header in turn, to see that they are all warming up equally together.This will narrow down if your problem is related to one or more cylinders.
If one or more of the pipes is cold/er than the others then you know which cylinders are causing the problem.
If you find that this is the case- one or more of the headers are cold then.
Remove the spark plugs-Keep in order.Examine the plugs-used plugs tell a story.How do they look?clean?black & sooty?Are they all the same colour?
Re-fit plugs to caps,sit plugs on metal of rocker cover,press starter - cheack for spark on all plugs.DO NOT HOLD OR TOUCH PLUG/CAPS WHILST CRANKING-WARNING - HIGH VOLTAGE- CAN KILL.

I can also suggest a few common problems that bothered the v-stars/viragos.
They were notorious for open circuiting their spark plug caps on either cylinder.Having the coils tested will confirm this. If you have a multi meter let me know & i'll guide you through testing them.

Air leaking at the inlet manifolds-where they bolt to the cylinder-test this by spraying with wd type spray with engine running-if engine revs change-has air leaks(sucking in wd & affecting mixture.)
They even pop the carbies out at the front some times & **** air there.
The inlet manifolds also have hoses & plugs on them(for checking the carbie balance/vacume fuel tap)Check all these for splits & tears-common depending on the condition of the bike/milage/fuel used.
This will not solve your problem but may help you to isolate where your issue lies.

I hope this is somewhat helpful & I'm happy to help if you need after following these suggestions
Kind regards Andrew Porrelli

I hope that this is in some way helpfull.

Posted on May 11, 2011

Testimonial: "Thanks very much for that information. I plan to continue working on it this weekend, and I'll definitely use these ideas. Take care...Danny O."

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#1,2 carbs slides won't raise when throttlr is

tighten the scews that lift the slides . need to remove carbs to access these .

Jul 07, 2010 | 1989 Suzuki GSX 1100 FJ (Katana)

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Carbs leaking just started it yesterday and feul began shooting out a small tube in between the carbs and if i plug it it coms out a large rubber hose on the right side of the carbs ...its like a float is...

all carbs have a cv type carb,with a big diaphram for the slide.real easy work on.if you have any mechanical knowledge.get a manual if not go on internet,and plenty of vendors for *** bikes that sell factory parts look up yours,and the carb will give you a breakdown of it.harley does not have any parts look up like *** bikes.sound like the carb needs cleaning or needle and seat is wore out

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Google motorcycle salvage yamaha and see what you can find there.

I looked at Babbitts and none are left. You may need to contact the manufacturer and ask for new carbs that will fit.

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Left bank won't fire at low speed. It is a 2004 790 bonneville triumph.

Chances are the carb slides are out of synchronization. Remove the air filters and look inside the carbs ( with a mirror if need be ). With engine off, crack the throttle and see which slide begins to raise first. Adjust the other carburetors' cable to make the slow carb raise to match the timing of the other carb.
Put in some new spark plus as well.

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Idles but won`t accelerate

Change fuel filter.
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Check for kinked or blocked lines.
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Honda 1300c backfire through carb at wide open throttle. I have open up the exhust and rejetted the carb . the bike will run fine up to mid throttle or 65 mph but if you accellerate hard or go to wide open...

Try balancing ans syncronising the carbs.
Turn the throttle screw on the LEFT carb one half turn inward. Now start the engine and get it warmed up. With the engine running, remove the RIGHT spark plug wire. Adjust the idle speed on the left carb to the point where the engine just can't quite stay running and dies. Now put the loose spark plug wire back into place.

Now turn the throttle screw on the RIGHT carb one half turn inward. Restart and rev the engine. Next, remove the LEFT spark plug wire. Adjust the idle speed on the right carb to the point where the engine just can't quite stay running and dies. Now put the loose spark plug wire back into place.

Turn the idle screw on each carb EXACTLY ONE QUARTER turn outward and restart the engine. The engine will be probably be idling very fast. Adjust both the idle screws equally from this point to get to the desired idle speed.

Remove the air filter and rubber fittings to allow you to see into the throat of both carbs. You may need a mirror to see inside. You need to be able to see the slides go up and down when you twist the throttle. Now turn the fitting where the cable goes into each carb such that there is just a bit of slack in the cable, 1/16" is plenty. Lock ONE of the cable adjusters down tight. All further adjustments will be made on the other carb.

With the motor turned off twist the throttle very slowly while looking at the slides. Both slides need to begin lifting at the exact same moment. If the slides don't raise at the exact same time then slowly twist the throttle until the locked adjuster slide just barely starts to move. Hold the throttle still and turn the adjuster on the other carb so that the slide on that carb just barely starts to move also. Now recheck the slide movement timing. Do this process until the slides on both carbs begin to raise at the EXACT same moment. Lock down the loose adjuster and re-check the slides.

Please rate this solution. Thanks!

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