Ok so I have been lurking around for a while before I decided to post something. I really need some help. I have a 64.5 w a 289 and a holley 4160 carb, inline universal electric fuel pump (5.5-9 lb output) w a adjustable pressure regulator. Here is the issue, I let the pump prime,try to start the car, flooded. Turn the pump off let it sit then use starter fluid and it fires right up. Turn the pun on while its running and almost instantly the engine dies... The carb has a new rebuild. Please help
Sounds like what mine was doing when I had a float needle sticking allowing the carb to overfill.
Early 1967 Coupe I6 restomod conversion
I6 to 302 conversion (suspension, 8" rearend etc.), T5 Trans, Hydraulic clutch, power brakes, Front granada disc brakes, Aluminum Radiator, Electric Fan, HEI distributor, Headlight Relays, EZwire harness, New fuel tank, fuel lines, brake lines, Restored gauges, Shelby drop to many to list.
To do: Bodywork (done), install new interior
buy many more parts & pieces
More pics of work http://www.hubgarage.com/mygarage/cr...vehicles/34385
Tarmac, thanks for your time. The guage is attached directly to the regulator. To answer your second question, yes I have addressed all connections. I broke the carb down today again to check for any issues. I'm still in the works as far as that is concerned, I will post any findings. But in the mean time please help with any advice. I am a noob to carb tune/rebuild and any good advice will be a great help. Thanks
If the car running/dieing is related to pump "ON", then it sounds directly related to psi. Can the regulator be turned down lower? Start at lowest setting and progressively turn it up. You may not be able to go beyond 5 psi. If its a stockish type build, it probably won't run bowls dry and this should help narrow down problem.
I recently bought an SU pump replacement for a pair of SU's. Switched from points style pump to solid state specifically designed for these low psi carbs. I now have an additional Quick Fuel regulator installed as fuel was pushed right out the overflows when ever pump was turned on. I ended up setting (apples to oranges, I know) down to 3.75psi to make it run "right".
Im betting on psi in reality being too high, no matter the current gauge output.
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