carbs

Hi everyone, hope all is well. So I have been working on my 78' through the winter so I can ride for spring, shes almost there I can feel it. However, I noticed something strange. The LH cylinder is running a lot hotter than the RH. When I spray the RH with carb clean the rpms shoot up. And when...

Hi yall, trying to figure out my idle issue with my 78'XS650-E 277 rephased. Running pamco 277 ignition with 3 ohm single output coils. Intitially my bike would idle fine then die after about 10 minutes and not start back up. Now it does not idle at all after I cleaned the carbs. Since I'm...

I know what you're going to say This is all covered in the tech section. Try searching other threads. Read the carb guide But this is such a finicky situation that it truly takes experience. I've ordered the uni filters with the red sock. My bike is an 81 engine with bs38s from a 78...

For sale, a set of good condition BS38 carbs. Photos below. Shipping is from 92675. Thanks!

So today I went outside to (in this order) set timing on my points ignition, then sync the carbs, and then set my mixture screws. I decided to do all this because I went up a size on my pilots and 2 sizes on my main jets for the Uni filters and open headers that I'm running. I had already did...

I’ve had this bike for a minute now. I inherited it after a dude got it running for the first time since ‘91. I cleaned the carbs. First time I’d ever done that, figured out what jets were. It kept leaking gas everywhere. The floats were all messed up. I said screw it. I bought the keihin carbs...

Ok. So I've added many parts from a 78 special to an 83 frame with an 82 engine. By adding a solid state reg rec a TCI box and a single coil I managed to get the bike to start, eventually I got the thing to drive, I was driving it around my neighborhood and it was pretty joyous. However , it...

hey Guys was wondering if one petcock would supply enough fuel to work both carbs properly if you just t’d the lines. 13/16 petcock. Thanks

If the title didn't give much away, let me explain. 1978 xs650, with Hugh's hand built complete kit. Timing is pretty much on point but does kick back every now and then. My issue is my carbs pop every now and then and stall the engine. Then other times they just pop and I'm on my merry way...

ipad picture quality sucks but you get the idea. Borrow two straight pins from the missus. Get them with the little do dads on the end as they're easier to find when you drop them. Here we have yellow stars. Open the butterflys and center one pin in the bottom of each opening. Close the...

BS34 carbs Throttle shaft seal Suzuki part # 13651-51010 SEAL I replaced the butterfly shaft seals with these Suzuki seals they fit perfectly. Cost a dollar less than the Yamaha seal ..... https://www.partzilla.com/product/suzuki/13651-51010 5twins tip BS34 mix screws 1mm thick x 3mm I.D...

Make me an offer on this set of Mikuni bs38’s! I have just cleaned them pretty well and have an uninstalled rebuild kit (new gaskets, needles, jets) but have decided to go the vm34 route. Carbs run great and the UNI filters were mounted for less than 100 miles on a 79 SF (one small cut inside...

SOLD

I have an 83 Yamaha xs650 ive bought mikesxs carbs (assembled) , mikesxs non vacum petcock and for some reason its still leaking gas. The leak only happens when ive rode the bike awhile it comes from the left carb from the overflow vent hose. I had someone tell me it could be the ignition or...

Sorry....sold....

Here are the symptoms: idles fine, but when riding it does not feel powered. It runs but when above 3000RPM it just does not progress fast or almost at all. It slugs and it's slow... like it has little power and progresses too slow up the torque... The details: The carbs were cleaned...

Hey guys, pretty new to the forum and new to working on bikes but I was wondering if I could get some help narrowing down an air leak. I have a 1978 xs650, started riding it this summer and I've had some backfiring popping issues for awhile now, only on the left side. I checked the points then...

Hi, today I just put velocity stacks to my carbs. I also put 140 main jets, 2,5 turn mixture screw. The problem is - when I run faster with wide open throttle, engine sounds like it has no power, fuel and slowly shut down that I need to run engine again. Should I put bigger main jets? Maybe 150...

I've got a 1983 with an electronic Boyer ignition, Hugh's PMA, and stock Bikuni bs34 carbs. I recently had a leakdown done and i've got 4% on the left, and 12% on the right. So, I know I won't be able to get her running perfectly, but I feel like I can still dial it in better than it is now. It...

Hi All, I'm new here and have just bought myself an XS2 US import which looks to be a real survivor. The clocks say 11k miles and I can believe it. I wouldn't be surprised if one of the tyres were original. It even has the full tool kit under the seat... obviously the seat isn't original which...