Holley 4bbl Rebuild Gone Wrong
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Cargo Master
Joined: Jul 2003
Posts: 2,328
Likes: 14
From: Colorado
Holley 4bbl Rebuild Gone Wrong
Hey all, before I take this Holley 4160 carb back apart, just wondering if anyone knows offhand what would cause gasoline to be gushing upward out of both horn vent holes.....???
I rebuilt this carb a few weeks ago and I guess I screwed something up good.
I rebuilt this carb a few weeks ago and I guess I screwed something up good.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Either debris in the needle and seats, bad o-rings on the outside of the needle and seats, float levels adjusted too high, or too much fuel pressure are about the only causes of that. I would pull the needle and seats from the bowls. When they are unthreaded, they should be snug to pull out if the 0-rings are correct. Look in the needle area (black tip) for a small piece of something. Also, look at the mating seat surface. You do have an inline fuel filter, I hope?
Did you use a Holley brand kit? Alot of the aftermarket kits don't work as well.
Did you use a Holley brand kit? Alot of the aftermarket kits don't work as well.
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Cargo Master
Joined: Jul 2003
Posts: 2,328
Likes: 14
From: Colorado
Hey thanks guys I'll check those areas first. Yes I used a Holley brand rebuild kit from summit. It's a marine use one? But all the gaskets appeared to be just right to the old ones I removed.
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Cargo Master
Joined: Jul 2003
Posts: 2,328
Likes: 14
From: Colorado
Hey guys, I got it fixed. Thanks for the tips. It was the floats. I totally forgot to set them at all when I replaced them. They were not shutting off of the fuel, at all. All is well. 
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