Holley leaks and floods - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 9 (permalink) Old Jun 7th, 01, 06:13 AM Thread Starter
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Join Date: May 2001
Location: Lapeer, Michigan
Posts: 77

Help please as i know nothing about holleys
it is a 4010 i believe
it is a 650 with vac sec
It runs really was once i get it going
the problem is more an annoyance than anything
when i got to the garage the car starts on the first crank
however when it has ben running and i shut it off (for more than 5 min other wise is starts fine) and let it set for a few the holley dumps fuel into the intake and floods the cylinders (i can actually hear the fuel being sprayed in)
i have to pump the gas and crank it over a few times before it starts, hesitantly and with a puff of black smoke.
It also leaks fuel onto the outside of the intake through the linkage when i shut it off as well
any help is appriciated...bout ready to go to edlebrock!!!!

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post #2 of 9 (permalink) Old Jun 7th, 01, 06:25 AM
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Join Date: Jan 2000
Location: Houston, TX USA
Posts: 797

Have you checked your float level? You say it leaks fuel into the intake after you shut it off, could be a couple of things causing this: Incorrect float level, blown power valve, fuel percolation.. Research and eliminate these things in this order first and you should solve your problem.
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post #3 of 9 (permalink) Old Jun 7th, 01, 03:25 PM
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Location: Accord, NY
Posts: 4,817

Check your float level first. It sounds too high.It should be to the bottom of the site plug threads while idling. Keep us posted. The holley is a good carb.

Rick Dorion
69 RS Conv,355,M20,4:10
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post #4 of 9 (permalink) Old Jun 7th, 01, 03:44 PM
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stuck needle and seat? and i agree..the holley is a very good carb..VERY easy to work on
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post #5 of 9 (permalink) Old Jun 7th, 01, 04:58 PM
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Make sure you have a good fuel filter. Sometimes dirt can get into the needle seat and keep the seat from closing and shutting off the gas.
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post #6 of 9 (permalink) Old Jun 7th, 01, 06:50 PM
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Location: Concord Cal. USA
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It is perculating from manifold heat. Put some sort of an insolator under the carb.

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post #7 of 9 (permalink) Old Jun 9th, 01, 05:13 PM Thread Starter
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Join Date: May 2001
Location: Lapeer, Michigan
Posts: 77

i have a 1/4 inch thick gasket under it
is that enough
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post #8 of 9 (permalink) Old Jun 10th, 01, 05:53 AM
Join Date: May 2001
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Had the same problem, soaking wet intake after shut off. I spent about $125 and countless hours, then got a 600 edelbrock for $200 and never looked back. I get better mileage too.

Jim Byrd
1970 350 four bolt, .060, Speed pro hyper pistons, stock crank and rods, '77 vette GM manifold, edelbrock 600cfm, comp magnum 280H cam, '993' 75cc heads, comp springs, manley valves 1.96"-- In 1972 Nova, aka Camaro killer.
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post #9 of 9 (permalink) Old Jun 10th, 01, 11:17 PM
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Location: skiatook, ok
Posts: 3,692

The 4010/4011 series holleys were a "unique" carb...you may have noticed that holley only made them a few years and then dropped them like a hot potato...I have never heard a good thing about these carbs. I would definately get another carb...I am partial to edelbrocks but normal holleys work good too.

375hp 78 Chevy truck
77 Chevy Nova
95 Chevy Lumina 3.4L
and building a 78 Nova
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