little problem

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Apr 3, 2005 | 08:43 PM

proud_redneck

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From: in the middle of nowhere

little problem

i put a new holley carburetor on my 1980 Ford F350 with a 460, and it idles pretty high, probably at about 900 or a little more. when i drove it for about 5 to 10 minutes, and as soon as i shut it off, about 5 seconds later, it made a loud pop, that sounded louder than a shotgun, and i saw a flame come out the exhaust, and i know this isnt good, so whats your ideas?

Apr 3, 2005 | 09:13 PM

proud_redneck

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From: in the middle of nowhere

anybody know what the carb should be tuned to, or if its just a matter of running a little too rich?

Apr 3, 2005 | 11:21 PM

kermmydog

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From: Western Central NV

I have a 600CFM 4160 Holley on mine 460 and it worked great out of the box. What Holley do you have? Have you tried setting the idle down to about 600 RPM. Sounds like too high of idle was your shotgun blast.

Apr 4, 2005 | 11:24 AM

MRStace84

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Did you set your floats. My 390cfm came from the factory witht the floats set as low as they would go. Set the floats, set the idle mixture and idle. If they doesn't work maybe you need to re-jet

Apr 4, 2005 | 10:19 PM

proud_redneck

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From: in the middle of nowhere

my buddy set my floats, and the fuel mixture, but i messed with the idle speed, cuz when its cold, every time i put it in drive or reverse, it drops to a really low idle and sometimes dies. so i just set the idle hella high. this carb is new to me, but my buddy had it on a camaro with a 396. i dont know what idle speed will keep it running under load(in gear.) does anybody else have that little problem?