Hi all, Now that I have fixed the exhaust issue, I now have an issue with the carb flooding after full throttle conditions. Wondering if it's a tank vent blockage? If the car sits for 2-3hrs, the fuel filter is empty. When the car is cold and hasn't been started for a day or 2, it takes a lot of cranking to start. Any help? Cheers
The fuel bowl could be set too high and floods after you let off. I just read an article that you should have a fuel reassure regulator before the carb and it should be as close as possible to the carb. This will also help keep the fuel from draining back out of the carb. You could also be getting a lot of heat under the carb after the engine is shut off and this is boiling the fuel out of the carb when it is shut off, pertaining to the problem of fuel going away after sitting. I actually use a wood spacer under my carb and this is an open spacer, this also helps with heat. You would have to watch inside the carb after shutting it down and see if the heat is causing fuel to go down the carb. Those phelolic spacers are supposed to help with heat. Set fuel press at 6 for the most part 7 is good if running at the track. Usually after 7-8 lbs the needle will get pushed off its seat and the fuel bowl will fill up more. I would check that out. Plus if it is already high and the needle gets pushed off after closing the throttle the bowl could really be filling up then. 1. Fuel bowl is too high and flooding the carb after shutdown. 2. Put Fuel pressure regulator as close as possible to carb.
I have 2 500cfm edelbrocks on my phoenix and had/have similar issues, but 1" phenolic spacers have made it much better If I parked it then went to start it 10 min later, it would almost flatten the battery before it got enough fuel to re start and if left for a few days, I had to dose the carbs It still does it a bit, but I dont have room under the bonnet to go higher, but its livable as is Mick
I used to have similar problems with my car. The cure was electric fuel pump and regulator set to 4.5 psi when running. I have an Edelbrock carb that likes no more than 5.5 psi. No more empty fuel filter. It stays 90% filled at idle. Under the carb I run the ss plate with a thick paper basket on both sides.
Thanks for the tips guys. I have taken the inlet manifold off to repair an exhaust leak coming from a welsh plug under the manifold and will block off the heat riser ports which should reduce heat soak as well. We dont need this crossover here in Australia. Not on the coast anyway. Not sure about the flooding issue yet. It does while trying to drive and just stumbles and dies. Its fine under WOT, but cant drive like that everywhere :Brow: Cheers
