vroom1776
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Hey all,
My 38 mm Mikuni VM rounslide carb keep spitting gas out the overflow tubes. This is NOT the stock carb...
Also, I stuck the stock carb (40 mm Mikuni BS40) back on, runs fine. This implies that it is not an issue with the petcock.
So, step
1) Make sure the float needle valve closes 2) Make sure the floats themselves do not leak (they float) 3) Make sure the float arm is not getting stuck. 4) Check float height.
It usually spits gas when I come to a stop. Ever since I got the thing on there, I've more or less had to run it on "PRI" at the petc0ck in order to keep it from stalling... THAT part may be related to the idle set screw & spring. The vacuum line seems to work properly, though. If I set it to "PRI" and disconnect the vacuum line, it dies (no vac to pull gas into engine). If I put my thumb over the vacuum port {edit ->} on the carb, and restart, it will run, so the vac's okay.
Am I missing anything?
Also, I am very unsure how to check the float height.
Thanks gang!
V
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