Question about 2003 Suzuki GSX 750 F (Katana)
I cleaned the carbs, replaced the fuel filter, replaced the air filter, changed the oil and synchronized the carbs. the bike idles well and will rev in neutral but bogs under load in all gears.
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Posted on Jan 02, 2017
I have seen this before a few things to do too make sure. First take the air filter out and shine a light use your fingers to move the slides up and down I suspect the springs that go on the slide is not seated in center you can tell from the slide going halfway and hanging up. Next, the boots on the slides only go on 1 way there is a notch on the carbs for them. I would guess this would fix you up if not we can get deeper into it with air-fuel mix screw settings.good luck
Posted on Mar 25, 2009
If you have installed the Dynojet kit's carburetor needles take them off and use the stock ones.
Dynojet's needles are for track use only and the don't work properly under 4000rpm.
Posted on Jun 15, 2009
hi buddy set the needle clip to its normal condition and also on the carb is the mixture screw you need to turn this all the way in and out 1 turns and try this you will always get a bog if you rev fully too quick i had this problem with my kx85 and it was just this hope this helped mate i will send the pic in a mo
Posted on Sep 17, 2009
Testimonial: "Appreciate the help. I've been all over w/ the air mixture screw. Still smokey and bogging down."
SOURCE: 83 suziki GS450 idle issues
the problem with the rubber was close but on the gs450 there is a metal insert that even if the rubber was rotted away the metal seals aginst the head so it cant leak. the problem is on the gs 450 suzuki used a cheap throttle cable that kinks behind the gas tank and kinks at the bend to the crabs under the set and the throttle system is a pull only not a dual cable pull push to always close the throttle. if you start the bike a wiggle the bend in the cable that comes out from the twist grip you will see it changes the idle. with either your finger or a screw driver and push the plate down on the carbs that the cable connects too. if the idle drops this conforms your problem. order a new cable from dennis kirk they have the revised one that has metal adjustment screw and metal clip in. better jacket casing as well.
Posted on Sep 29, 2009
hi,sounds to me like the air fuel ratio is all up the ***,locate the air/fuel screw on the carb(normally on the side)screw the screw right in untill it stops,then back the screw out 1.5 turns,this should get the bike to run without the choke,once you have the bike running simply turn the screw in or out untill the bike settles into a nice steady idle,should be good to go,hope this helps...cheers
Posted on Mar 27, 2010
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