carb advice needed

I’ve been trying to get help from the suzuki gs forums but haven’t got much responses. I’m hoping some of you might be able to assist with this stupid idle problem. 1980 Suzuki GSX400 with twin Mikuni BS34SS Here’s what’s happening: • Idle at 500 RPM: The bike idles fine, but after giving it...

Hey y'all I'm brand new to the scene and I'm having issues I bought a 79 xs750 everything looks fine except for the carbs I'm missing a part of the choke assembly but I don't know the part if it's worth sourcing and rebuilding or easier to buy a new set all together any help would be greatly...

I've been fighting with this bike for 3 months now and it's still running like crap. I cannot set the timing. Trying to move the white line to the F marker cannot happen. If I try to adjust while running using a timing light, the line can only move further from F no matter which direction I go...

My 1977 xs360 hasn't been wanting to rev past 7-8000 rpm without sputtering out, you can hear the left cylinder start to crap out. I tracked the issue down to that side flooding with gas, but only at wide open. I ran it around just cruising, pulled the plugs and they both look healthy. A couple...

Hello again everyone, I greatly appreciate the help this forum gives me, and I am having a blast exploring this bike. Now I need some more pointers, in my case some good quality vendors for these carb parts. So, I believe I have discovered the source of my gasoline leakage out of my carb air...

I just bought a 1979 XS650 and got it home yesterday, I saw it on facebook and fell in love with the style, the simplicity, and knowledge of the power and reliability has me hooked on taking care of this pretty much entirely stock 650 from over 4 decades ago. One thing I noticed while riding it...

Some background on the bike, it’s all stock and I recently rebuilt the carbs and synced using a digisync. Bike seems to make a “puffing” noise and die while pulling to a stop sign at near full stop. Bike will be impossible to start for awhile until I let it sit for after that. I did not set the...

I just got new 34mm Mikuni carbs from TCbros along with their suggested aluminum manifolds. Anyone have photos of how they routed fuel lines, and suggestions on a non-vacuum petcock for my stock 1980 tank. Do I need a double petcock or can lines be tied together with fittings? I am also a little...

So is it possible? I do not have a manometer. Here’s my theory and happy to have it critiqued to death. Stock XS650SH, stock pretty much everything. Points on this one in Australia. If I set my idle higher and disconnect a plug lead from each side one at a time, then change the balancing screw...

Hi All; As my project draws closer to being complete I keep on getting tempted by the shiny pics of new carbies on MikesXs. To date, I've had nothing but great service and great products from these guys - But I note that opinion seems divided on both MikesXs & the carbies here. So given...

Hey everyone, I’m running over the carbs on my 79 special. I’ve got everything up to spec, but I am interested in how to determine my throttle cutaway. I know what cutaway is but in my manual, the spec for my cutaway is listed as #120. Can anyone tell me what this means?? cheers!

I have these 90 degree connectors on my carbs. The bike is an X1 1971 but the Mikunis seems to be the ones used on the X2, I compared the numbers on jets/seats etc. with the rebuild kits on Heiden tuning ( I live in Sweden so Netherlands are the closest retailer). These little guys seems...

So I’ve been having some carb trouble - I think I’ve finally got it sorted out, ridiculously high idle, replaced the diaphragms/slides - and I took my carbs apart yesterday... You know that rubber piece that goes in under the pilot jet? Well after I drained my carb, it was all swollen. Why is...

I am trying to diagnose a strange new backfire/stumble issue i have Specs: 1981 XS650 SH with Ganzo Box ignition BP7ES plugs 0.035" gaping High output coil from Mikes Carbs are well synced Stock air boxes Stock jetting (i believe) Was running with no issue on a PAMCO before the Ganzo...

Hey guys- I’m resurrecting my 78 xs650 and have an issue where the bike has a hesitation at 3k rpms and makes a “pop” out the pod filters when I let off the throttle. Otherwise, the throttle is smooth and responsive. Any thoughts about carb adjustments?

Hey all. So I found that there were bits of paper towel stuck in the inlet. I was able to crank through enough to get them to burn off. The issue I'm facing now is that Both (but more on the left) exhaust headers are popping pretty consistently. I had a little too much oil in the engine and...

hey guys! Long time no see. Wrapping up my winter build on my 1977 XS650 and have come across an issue i can’t correct for the life of me. I’m running 78-79 bs38s btw (yes, correct internals have all been identified and replaced upon purchase of bike) Started lean on my jetting after...

Hey guys back again haven’t posted here on a while been trying to just read more and answer my own question instead of repeating all the questions that are already asked, but now I’m at my wits end so here I am. I have a 73tx650 stock everything except my carbs are 76s, podfilters and step up...

Hey all! So... My bike was running decently and I wanted to mess around with it and get my idle smoother with no deceleration popping. Did a bit of research and found that it was most likely a lean mixture, though it could be a number of reasons. So I took the initiative to take off the carbs...

I'm in the process of tuning up my BS34 carbs following the carb bible "The XS650 Garage Carburetor Guide.PDF". I've noticed it is running a bit rough when I apply throttle. I popped the air pods off to see if that would help. When I looked in the air intakes, I was surprised to see the slide...