Carb Dumping Gas

Brian Browning · 01-29-2001, 11:53 AM

Hi everybody,
Hope ya'll had a nice weekend. The weather was finally nice enough for me to take my car out without a top. (I need a new one bad.) I've got a problem:
The car wil start right up and run ok. After it warms up, if I shut it down, the carb keeps leaking gas into the inside. This is severe enough to flood the engine and it won't restart until its sat awhile. I've rebuilt the carb, but that hasn't helped. Anybody have any ideas whats going on? Would too much carb cause this?

Its a 66 Hi Po, 60 over, 351 heads, headers @ duals, Shelby intake and 750 vacuum secondary holley.

I'm just about to go buy a new carb, but hate to if that won't fix my problem.

------------------
65 convertible
289 Hi Po
4 speed

Clark Rodgers · 01-29-2001, 08:34 PM

Brian,
It sounds like your float is either stuck or set to high. Changing the carb will fix it but fixing yours will be alot cheaper.

------------------
69 351W Sportsroof deluxe

Gearhead999 · 01-29-2001, 10:10 PM

Reset the float. If you have external adjustments use the sight holes in the side of the float bowls. Set it so it is just to the bottom of the opening. Be careful here, you can get alot of RAW gas coming out on a hot engine. Put some shop rags or paper towels under the float bowls to soak it up. Also, make sure that the carb isn't getting real hot, temperture wise. That too can cause a problem with flooding.

Brian Browning · 01-30-2001, 08:31 AM

Its not the float or the needle and seat. I've adjusted/ cleaned the float and the needle and seat numerous times. I had a guy on the corvette forum tell me that my metering plate is warped. It seems like that would produce the symptoms I'm getting. Summit has a metering plate to metering block conversion kit for just over 30 bucks. Then a new fuel line for 15. I'm going to try that. If I still have the problem, I'm seriously considering a road demon carb.

------------------
65 convertible
289 Hi Po
4 speed

01-29-2001, 11:53 AM	#1
Brian Browning Registered Member Join Date: Sep 2000 Location: Hattiesburg, MS, USA Posts: 86	Carb Dumping Gas Hi everybody, Hope ya'll had a nice weekend. The weather was finally nice enough for me to take my car out without a top. (I need a new one bad.) I've got a problem: The car wil start right up and run ok. After it warms up, if I shut it down, the carb keeps leaking gas into the inside. This is severe enough to flood the engine and it won't restart until its sat awhile. I've rebuilt the carb, but that hasn't helped. Anybody have any ideas whats going on? Would too much carb cause this? Its a 66 Hi Po, 60 over, 351 heads, headers @ duals, Shelby intake and 750 vacuum secondary holley. I'm just about to go buy a new carb, but hate to if that won't fix my problem. ------------------ 65 convertible 289 Hi Po 4 speed

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01-29-2001, 08:34 PM	#2
Clark Rodgers Registered Member Join Date: May 1999 Location: Rowlett,Texas Posts: 306	Brian, It sounds like your float is either stuck or set to high. Changing the carb will fix it but fixing yours will be alot cheaper. ------------------ 69 351W Sportsroof deluxe

01-29-2001, 10:10 PM	#3
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Reset the float. If you have external adjustments use the sight holes in the side of the float bowls. Set it so it is just to the bottom of the opening. Be careful here, you can get alot of RAW gas coming out on a hot engine. Put some shop rags or paper towels under the float bowls to soak it up. Also, make sure that the carb isn't getting real hot, temperture wise. That too can cause a problem with flooding.

01-30-2001, 08:31 AM	#4
Brian Browning Registered Member Join Date: Sep 2000 Location: Hattiesburg, MS, USA Posts: 86	Its not the float or the needle and seat. I've adjusted/ cleaned the float and the needle and seat numerous times. I had a guy on the corvette forum tell me that my metering plate is warped. It seems like that would produce the symptoms I'm getting. Summit has a metering plate to metering block conversion kit for just over 30 bucks. Then a new fuel line for 15. I'm going to try that. If I still have the problem, I'm seriously considering a road demon carb. ------------------ 65 convertible 289 Hi Po 4 speed