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Old 07-28-2007, 07:04 AM
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Holley 3310 set up

I installed a rebuilt holley 3310 carb on a mild 350 I cant seem to get the carb to idle below 2000 rpm I tried to check for vacuum leaks and didnt find any I plugged any port coming off the carb adjusted the idle setting and the air bleeds when I hit the throttle it just stumbles and dies untill I let off and then it resumes the 2000 rpm idle. I am running about 6 pounds of fuel pressure.
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Old 07-28-2007, 07:12 AM
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the jetting maybe? ive had the same problem but with a carter, that carberator was replaced needless to say
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Old 07-28-2007, 07:20 AM
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Is your float level adjusted correctly? What size jets are in it? Is the choke pulling off completly?
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Old 07-28-2007, 07:21 AM
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also what kind of timeing are you running? and do you have your vac advance hooked up?
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Old 07-28-2007, 07:36 AM
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There is no vacuum advance total timing is at 35 degrees, the choke is manual and I have it turned to the open position, I never checked the float level and am really not sure how to I have to check with the guy who rebuilt it for the jet sizes. I took a elderbrok off it which ran ok but we were looking for a little more power I tried a 750 and a 600 elderbrok it ran about the same with either it actually lost a few tenths with the 750 but idled ok with either.
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Old 07-28-2007, 09:04 AM
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Did your car back fire any thru the carb? if so you may have a power valve problem....which is dumping extra fuel into the carb.

To check your float level there are two plugs on the float bowls. take these out and adjust the floats, loosen the flat head screw ontop of the bowl and turn the 3/4 or 5/8 nut that is below it to bring the fuel level to where it is almost but not pouring out of the sight plugs. Also there is a secondary adjustment on the bottom of the carb, for the secondary butterflys. This may be opened to far and letting air and fuel thru them.
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