carb problems

  1. jpweaver

    CM400 Carb Leaking Overflow

    Hi guys, wondering if anyone can help my diagnose my leaking overflow on my right side carburetor. Some details below... Only right side carburetor is leaking, substantial leak upon start up (rebuilding bike and have not gotten to properly idle yet) When I removed it, bowl was full of gas -...
  2. hnkrader

    Can't figure out carb adjustment

    Hell all, so I'm new to carburator adjustment and for the life of me I cAn figure out how to get this thing running right. I've got a 1971 CL175. I did a carb clean and rebuild, points gap adjustment, timing adjustment, and valve lash adjustment earlier this month. After doing all this, I've...
  3. mhriza

    CB175 K6 carburetor trouble after engine getting Hot

    Hi all, I am working on my '72 Honda CB175's restoration project. everything went fine at first, when engine cold start, the engine idled perfectly, but after a few km riding, some changes occurred in the performance and I notice that the idle it's not as perfect as when it's cold I Installed...
  4. thathondamaticgirl

    1979 Honda CM400A does not like mikuni carbs.

    i have a 1979 honda cm400a that i’ve been rebuilding for about a year now. my main issue is that it’s all crank, no turn over. brand new battery, ignition coil, valve seals + engine gaskets + timing adjusted … but i believe my problem lies in the vm28 mikunis i installed. i have to set the idle...
  5. 1979 CM400T carb leak

    the left carb is leaking out of the overflow port in bowl. the float is set right....i checked it with a clear gas hose holding up to the side and opening the drain. the drain screw seats good... but still leaks. help!!
  6. 1979 CM400T

    Y'all I'm working on a 1979 CM400T that hasn't ran in 10+ years. The left bowl revealed a needle valve that had to be pried out with a screw driver. The rest is similar.... I got it running after the first carb parts order.. a set of air shut off diaphragms. But, only the left cyl will idle...
  7. Clutch Cargo

    1973 SL350 Carbs - Wisdom Required [SOLVED]

    Greetings, I recently acquired a 1973 SL350 that is exhibiting an issue for which I could use some wisdom and insight, before I dive into troubleshooting. The bike starts and idles perfectly. Ridden at lower RPM (up to 3.5k or so) it runs fine. However, as you push beyond that it will begin to...
  8. rapid_roy

    72 CB175, swamp in carb!

    Hey all, bike n00b here. I have a 72 CB175 that I'm finally getting around to fixing. A brief history, the bike has ~3k miles. I bought it from the PO in 2019, who said it was in storage since the 80's. It started and ran when I bought it, and my dad rode it October 2020. Now I can't get it to...
  9. 1979 CM400T carb rebuild- read stickies, looking for dummy version for some things.

    1979 CM400T carb rebuild- read stickies, looking for dummy version for some things. I've got the carbs torn down on the table and im going through stickies and how tos and just get confused on some longer threads. So here's the issues. Putting new stock jets in- how many turns? Main and...
  10. Rebuilt carbs - replaced petcock - now petcock issue?

    Working on a '73 CB350 Rebuilt the carbs - drained, cleaned and flushed tank with "Metal Rescue" - installed new petcock valve. Bike started and idled for about a minute or so at about 1500 rpm. Was running on both cylinders - hot exhaust from both pipes. Carbs responded to increases in...
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