Question about 1985 Suzuki GSX 550 ES
I have recently rebuilt a gsx 550es (1983) runs well but misfires at revs over 5000(approx 3/4throttle) i have cleaned the carbs, fitted new plugs and airfilter. when cheaking the plugs it appears to be running weak but i cant find any info on setting the mixture. Please help.
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Posted on Jan 02, 2017
SOURCE: idle speed problems
You have to sync thecarbs and also you will have to reset the air-fuel mixture screws.
One of the carburators should be factory adjusted, I dont wn a kawasaki but I own a YAMAHA SECA XJ750R and thro it I am sharing my experince.
Once you have located the factory preadjusted carburator you can thn set the others to its specs. I use the feeler gauge to do for my bikes carburators and it works fine.
With regards to the mixture screw..... get the all in tightened but slowly aas to not damage the pin end of it!.
Start the bike and get it to normal running temp and thn set the screws 2 and half turns out...you may need to set your idling speed before you begin this setting of the mixture screws, you prolly will hveto go higher on revs or vicecersa ....onc eyou are at the mixture screws and adjusting them , you will surely note the differenc ein sound of he bike an its idling ..
Hope this will help.
Posted on Feb 02, 2009
sounds like the main jets are partly pluged, you must remve all brass jets and seats including needle jet and its slide soak in carb cleaner and blow out with compressed air only.. hold up to bright light to verify if all are clean. jim
Posted on Mar 29, 2009
as you have replaced carbs you will need to retune for fuel intake also check its getting enough air ie.. air filter has been changed or is clogged
Posted on Jun 17, 2009
Your main jets sound like they too small or partially blocked with dirt/varnish. If steady cruising at 4500 is smooth, and you open the throttle somewhat quickly, it stumbles a bit, and breaks up it is too lean or the jet is too small. If it bogs, and smokes it's too rich. You could pull one of the spark plugs and check it's color. It sounds to me that it is too lean, perhaps aftermarket exhaust was fitted, and the carbs weren't re-jetted to compensate? I hope this helps.
Posted on Jun 29, 2009
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