Tombo
XS400 Addict
So I've been putting time into my 1980 special model - I pulled the carbs and found the floats to be set WAY too low - which is probably why my bike had been running like shit.
While I was there, I went ahead and cleaned all the jets - and the PO, though she never got it running, did a GREAT job cleaning it (not so much work for me).
I only had enough time to take them down, clean em up, set the float levels, and button her up before bed time last night - and DMV time came this morning - so I didn't get a chance to balance carbs or set the mixture. (nor did I "wet set" the floats, or even measure using clear tube method yet)
The bike runs infinitely better - good solid idle, good even acceleration, good throttle-down response from the motor, etc.
But the STRANGE thing, is that the bike will only run on one cylinder when in choke.
Any ideas? My guesses would be some type of air leak in the enrichment circuit - perhaps one of the rubber sleaves is cracked or something, so it isn't drawing gas. (btw, I know it's not drawing gas, because when I first got it running poorly pre-float level adjustment, the same cylinder wasn't firing, and was spritzing gas that would drip out of a small hole at the header/muffler juncture). The bike, like I said, runs awesome - and once I have it started, I just switch the choke off, and let it warm up at normal idle speed (which kicks the other cylinder into gear!)
Tomorrow before work, I will wet check and/or wet set the floats, adjust mix screws with COLORTUNE and sync carbs, and if I have time, go and get me a set of bent feelers (or bend the feelers I have in favor of buying a new set for my XJ).
While I was there, I went ahead and cleaned all the jets - and the PO, though she never got it running, did a GREAT job cleaning it (not so much work for me).
I only had enough time to take them down, clean em up, set the float levels, and button her up before bed time last night - and DMV time came this morning - so I didn't get a chance to balance carbs or set the mixture. (nor did I "wet set" the floats, or even measure using clear tube method yet)
The bike runs infinitely better - good solid idle, good even acceleration, good throttle-down response from the motor, etc.
But the STRANGE thing, is that the bike will only run on one cylinder when in choke.
Any ideas? My guesses would be some type of air leak in the enrichment circuit - perhaps one of the rubber sleaves is cracked or something, so it isn't drawing gas. (btw, I know it's not drawing gas, because when I first got it running poorly pre-float level adjustment, the same cylinder wasn't firing, and was spritzing gas that would drip out of a small hole at the header/muffler juncture). The bike, like I said, runs awesome - and once I have it started, I just switch the choke off, and let it warm up at normal idle speed (which kicks the other cylinder into gear!)
Tomorrow before work, I will wet check and/or wet set the floats, adjust mix screws with COLORTUNE and sync carbs, and if I have time, go and get me a set of bent feelers (or bend the feelers I have in favor of buying a new set for my XJ).