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Old 01-15-2007, 06:30 PM
gilby246 gilby246 is offline
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Holley carb - Float bowl adjustment

I bought a new Holley 670 about 5 months ago. From the day I put it on the secondary float bowl would fill up to the very top of the sight plug (yes I adjusted the float). I changed the needle/seats and float. The original secondary float was the nitrowhatever type, I changed to a brass for the hell of it. I have taken it apart numerous times to inspect for grit , dirt or any abnormalities but found nothing that caught my eye. If I drain the bowl and set the float to its lowest point the fuel will stay well bellow the sight plug. As soon as I start to adjust it so I can begin to see fuel at the bottom of the sight plug the bowl will fill up to the top again.
Any attempts to lower the fuel level after it has filled the bowl results in nothing

Primary bowel has no problems and stays right at the bottom of the plug

FYI - When I originally put it on I used a stock mechanical pump (5-6 psi), I have since installed an electric pump set about the same psi

Any thoughts would be helpful
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