rich

Just recently bought a 1975 Yamaha xs650 that was sitting for sometime to assume. I cleaned the carb and out new plugs in. The old plugs were horrible with black carbon covering them probably from running too rich. No matter how I've tuned it stalls and won't run smooth and needs alot of help!

In another thread on this site XSJohn mentioned something that would lower cylinder temps by 20+ degrees. I am REALLY interested in finding out exactly what John was talking about here, so I did some digging. XSJohn's comments are in blue for clarity. This is a start, but there has to more...

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...

so i bought a 1973 tx650 on ebay like a dumbass for my first motorcycle unfortunately some people suck and sell things to you by lying and saying they work when they don't. The dude said it ran and drove just fine but when it got turned on it kicked over but defiantly did not go into 1st anyway...

I have a Japense import 1978. XS650 SE with the Vin 447901xxx. I bought him from Old Gold in Londonderry, in Australia. It was running alright when I bought it but I drove it up the road and back so nothing definitive. I have striped it down to frame to repaint and turn it into a brat/cafe...

I just bought it. Its a kickstart and its a custom hard tail. Cleaned carbs cleaned jets finally got it to a good idle changed both spark plugs also. It idles fine now but everytime i go to give it gas it sputters and backfires and such. I cant find a mark of what carbs it has but i think they...

I recently rebuilt my engine and was having issues with one of the cylinders running rich at idle. I went through everything and finally found what the problem was. The float bowl. I swapped carbs from left to right and the rich condition followed the carb. I then swapped float bowls and the...

So I though I finally had my bike tuned properly. It was pulling hard and running great. No it idles as if the choke was partly on. Just to keep it running standing by itself the idle screw needs to be almost all the out. The midrange on up run smooth but dont seem to pull quite as hard as...

Like the title says. Ive got a 1975 xs, with stock BS38 carbs. Stock air filters are back on but it had pods when I first got it. PO must have also fucked with the exhaust because its loud. It has full length pipes but I'm assuming its been carved out. She idles like a dream. Only during...