I'm having an issue with my Holley 600 carberator. I tried to adjust my floats and found the primary side to be low and the secondary high. When I go to adjust the float level (the engine is off) gas is spraying out of the external adjusting nuts as soon as I loosen the lock screw. I can't believe your suppose to do this with the engine running but after runnning the adjuster all the way down on the secondary float gas was still spilling out of the sight hole. I then decided to remove the carb and do a minor rebuild. I found the seal at the secondary adjuster to be falling apart, cleaned and blew the passages clean, replaced the all seals and gaskets, adjusted the floats to "inverted level" then reinstalled the carb. On startup the motor sounded pritty good, idled fine and after a little smoke the exhaust sounded good. I cracked the site plugs and found the same results, fuel above the secondary site hole and below the primary float hole. Still have fuel spuing at the level adjusters but after relieving the pressure I adjusted the levels 1/4 turn and the Pan won't hold an idle, falls right off like it's starving for fuel or flooding. If I rev up to 2000 it will run but sounds like it's got a slight miss. I did replace the plugs and adjust the timing (by recommended highest idle method, about 20d BTDC). Looking for some input and hopefully a simple fix. This fuel bowl issue has me stumped and the carb is off for the 3rd time.
Thanks,
Steve in VA
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