Rough start and fuel leak - advice please

[Geff McCarthy]

My 400 with 4bbl Edelbrock 4bbl usually refuses to start, then leaks fuel out of the left front side while i am cranking. I have rebuilt the carb and set the float levels at least twice! Help please.

 

[Moparnocar]

Check your fuel pressure. That or those needle/seats are bad

 

[Geff McCarthy]

Thanks. Due to many prior difficulties, i have a pressure gauge in line, I run 4psi.

 

[Moparnocar]

Thanks. Due to many prior difficulties, i have a pressure gauge in line, I run 4psi.

Interesting, that's actually low. I'd guess you've got a hanging up float, bad needle seat, or possibly warped upper part of the carb ( I've seen that on a afb)

 

[Big Bad Dad]

I had one do that. Is the float empty? In my car, the brass float had a pinhole, and the float was about 1/2 full of gas. That kept it from closing off the needle and seat.

 

[Geoff 2]

Agree, probably a leaking float that sinks & floods.

 

[Geff McCarthy]

i pulled the carb, disassembled, replaced the left needle valve, re-set the floats, and...much better starting and no fuel leaks! Thanks for the advice.

 

[69a100]

My 400 with 4bbl Edelbrock 4bbl usually refuses to start, then leaks fuel out of the left front side while i am cranking. I have rebuilt the carb and set the float levels at least twice! Help please.

i pulled the carb, disassembled, replaced the left needle valve, re-set the floats, and...much better starting and no fuel leaks! Thanks for the advice.

I guess you need to pay more attention to what you're doing when rebuilding carbs?