Holley Fuel Leak
Thread Starter
Drifting
Joined: Oct 2010
Posts: 1,873
Likes: 134
From: Bushkill Twp. PA
St. Jude Donor '17
Holley Fuel Leak
I have fuel weeping out of the screw that I am pointing to with the screwdriver. I read the service manual, and this adjusts the fuel level in the bowl using the side sight plug. Seems like if fuel is leaking, the bowl is filling past the sight pushing it out the top. This would tell me to adjust it per the manual to lower the level.
Is there something different happening here that I need to be aware of? Of is it simply lowering the fuel level like I said above.
Is there something different happening here that I need to be aware of? Of is it simply lowering the fuel level like I said above.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
I have fuel weeping out of the screw that I am pointing to with the screwdriver. I read the service manual, and this adjusts the fuel level in the bowl using the side sight plug. Seems like if fuel is leaking, the bowl is filling past the sight pushing it out the top. This would tell me to adjust it per the manual to lower the level.
Is there something different happening here that I need to be aware of? Of is it simply lowering the fuel level like I said above.
Is there something different happening here that I need to be aware of? Of is it simply lowering the fuel level like I said above.
To fix, remove the slotted screw and removed the hex nut. Replace both of the gaskets with new gaskets. Put some assembly lube on both sides of both gaskets before you install them. Once installed, set the float level with the engine running to the lower edge of the sight hole on the passenger side of the bowl and then snug down the slotted screw. It will not leak with new gaskets with lube applied.
Lars
Pro
Joined: Nov 2013
Posts: 730
Likes: 37
From: Catoosa Okla
Yes. Before you start adjusting the float, pull (unscrew) the float level inspection screw. Full should NOT flow out of here. If you can rock the fender and make it spill out the hole its about right. Also note there are 2 (two) gaskets under the float adjustment screw that are prone to tearing when adjusting. These can be bought at about any auto parts store. Or you can make then from gasket material.
Burning Brakes
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
[QUOTE=Dan H.;1586302641]I have fuel weeping out of the screw that I am pointing to with the screwdriver. I read the service manual, and this adjusts the fuel level in the bowl using the side sight plug. Seems like if fuel is leaking, the bowl is filling past the sight pushing it out the top. This would tell me to adjust it per the manual to lower the level.
Is there something different happening here that I need to be aware of? Of is it simply lowering the fuel level like I said above.
Well the adjuster is right over the needle/seat and uses small gaskets to prevent fuel weeping. You should adjust the float level to the correct position. Do this wet (sight hole) or dry (measure the float by opening the bowl). But, don't just start turning things, unless they need it, it could just be a gasket. Since you are pointing at the rear bowl, you have to crack the rear throttle to pull down the fuel level after an adjustment.
Is there something different happening here that I need to be aware of? Of is it simply lowering the fuel level like I said above.
Well the adjuster is right over the needle/seat and uses small gaskets to prevent fuel weeping. You should adjust the float level to the correct position. Do this wet (sight hole) or dry (measure the float by opening the bowl). But, don't just start turning things, unless they need it, it could just be a gasket. Since you are pointing at the rear bowl, you have to crack the rear throttle to pull down the fuel level after an adjustment.
Thread Starter
Drifting
Joined: Oct 2010
Posts: 1,873
Likes: 134
From: Bushkill Twp. PA
St. Jude Donor '17
Thank you guys
A dried/cracked gasket could likely be the issue. I will pull the crew and check the gaskets. This car has done far more sitting than driving. Carb was off for a year while I was taking care of other items. Since I put it all back together, I've only driven it about 20 miles. And since then, its been hibernating during this northeast winter....
A dried/cracked gasket could likely be the issue. I will pull the crew and check the gaskets. This car has done far more sitting than driving. Carb was off for a year while I was taking care of other items. Since I put it all back together, I've only driven it about 20 miles. And since then, its been hibernating during this northeast winter....
Thread Starter
Drifting
Joined: Oct 2010
Posts: 1,873
Likes: 134
From: Bushkill Twp. PA
St. Jude Donor '17
Good Question. Honestly, I'm not sure. It plugs into that solenoid you can see on the carb, on the bottom left. I'm learning as I go so I feel a little dumb not being able to answer. Car is an LT-1, not sure if that makes a difference or not.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
It's the wire for the idle-up solenoid. It prevents run-on after shutdown if the solenoid, along with the carb's curb idle, is all set up and adjusted correctly.
Lars
Lars