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  • I
    Itschrisb replied to the thread Carb Issue.
    I’d take them apart and clean them, set the float height and mixture screws before you order anything.
  • The Wang
    The Wang replied to the thread Carb Issue.
    I'm probably going to do that this weekend
  • I
    Itschrisb replied to the thread Carb Issue.
    Sounds like the needle isn’t closing or the float height is too high. Do you have the brass or rubber floats? Have you taken the carbs...
  • S
    EDIT: I think I found the issue, the new battery I installed is bad. For the life of me I cannot figure this out. Sorry for the long...
  • The Wang
    The Wang replied to the thread Carb Issue.
    Major flooding, so I assumed it was the floats. I recently read some other threads about gunk from original fuel tanks going into the...
  • I
    At this point I’ve put about 350 miles on my xs400 since getting it back up and running. The original swing arm bushings were so bad I...
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  • I
    Itschrisb replied to the thread Carb Issue.
    Generally speaking the only thing you need during a rebuild is new float bowl gaskets. Unless the floats and jets are that messed up...
  • The Wang
    I'm also having carb issues, I just posted a thread but reading this one opened my eyes
  • The Wang
    The Wang posted the thread Carb Issue in The Garage.
    Having carburator issues, wondering if there are modern carb replacements or if those rebuild kits online do the trick
  • T
    thecurryman replied to the thread 77 xs400 starting problems.
    Limped it into work but didn't have much time to tinker with it. Really is a struggle to get this bike to 35mph lol. Went ahead and...
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  • T
    thecurryman replied to the thread 77 xs400 starting problems.
    Yeah you aren't wrong tstidham it is a lost art. I had a similar experience as child rebuilding carbs for my dad on an 80s suburban lol...
  • CaptChrome
    Bravo! I guarantee that every attempt after this will be better, but you will never get good unless you start in the first place and a...
  • CaptChrome
    CaptChrome replied to the thread 77 xs400 starting problems.
    If this ^^^^ doesn't help, check the spark timing and advance. Lack of balls across the rev range is also a sign of a retarded spark.
  • tstidham
    tstidham replied to the thread 77 xs400 starting problems.
    Glad I could help! Carb tuning is a bit of a lost art these days, but my first vehicle was a 70 VW squareback with a 68 dual carb setup...
  • Kutay
    Today i went for a motogymkhana with the Cub it was funny scraping the leg shield on the turns :D
  • Kutay
    Heloooo. After a long time of exams and paper work i continue with the bike. FInushed the seat latch mechanism. Now doing a bondo over...
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  • T
    thecurryman replied to the thread 77 xs400 starting problems.
    Cap you were right again. I started heading back to the original configuration and kept getting warmer, sprinkled a little bit of...
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  • CaptChrome
    CaptChrome replied to the thread 77 xs400 starting problems.
    The crankcase to carb intake line is mostly to reduce emissions. It is not a reed valve, but simply an opening straight to the crankcase...
  • WestCoast_83Maxim
    Hello! I recently got an '83 xs400 maxim and am refurbishing it since it has that classic west coast damage of rust and salt stains. I...
  • T
    thecurryman replied to the thread 77 xs400 starting problems.
    Alright I'll give it a closer look this afternoon. When I rebuilt the carbs I replaced butterfly shaft seals while I had them off...
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