Old Tex

Help

I have a mallory FPR part number 4309.
One problem i have is that the fittings leak fuel. The second is i need your opinion on how to drop the pressure. The lowest i can get is about 10 psi and im runngin the webber boost prepped carb robert built me and i think that might be to high.
How do you guys run the return for that reg. There cant be any resistance in the return line or else the reg cant do its job. There are three steel lines on the firewall that go back to the fuel tank. one is bigger than the other two and as far as i know this is used as the fuel feed. and i use one of the other ones as fuel return. Do you guys ever try and run the bigger tube as a return? The other thing i was thinking of would be to put a small barbed fitting at the reg for the feed line so that way the return can be larger than the feed?
let me know your opinions.
Thanks, Brent

trochoid

iTrader: (6)

What size fuel pump are you using, brand and model.

680RWHP12A

did you eat some cheese before installing? that could be the problem.....

coldy13

If you didn't put any sealer on the threads, don't expect them to seal. I used teflon tape on the fittings and they all seal perfect. If you think there's a restriction in the return line, disconnect it and run a short line from the return into a bucket. Start the car up and if the fuel pressure is lower than with the return line to the tank hooked up, there's a restriction in the line somewhere. You can just run a new rubber hose for the return line and zip tie it to the old line so it doesn't scrape the ground.

shelrock7

Not to sure about your specific carb. But I have a weber 45 DCOE that handles a max of 4 psi. Is any gas flowing out of the intake onto the rotor housings? If so you may be pushing to much fuel pressure into the carb, and its overflowing and flooding everything.

Old Tex

Yeah i got the fittings to seal today. i used a combo of teflon which isnt exactly fuel proof and a sealer that is gas proof made by permex i think. umm as far as the pressure problem im gonne get a more accurate gauge made for carb pressures. i will check it again tomorrow.
Being as i dont want to start a new thread and take up space, i have another question.
I ordered a remanufactured starter from a autoparts store down here. I installed it and went to go crank the engine over and it cranked fine. in fact it cranks so well that when i turn the key to run it still cranks, when i turn the ignition off it still cranks and when i take the key out of the ignition it still cranks. LOL. i have to disconnect the battery. Thank god that stopped it or i would be inseriouse trouble. Im assuming that the sloinoid is getting suck i have checked all the wiring going to the starter and it has no short to voltage or gets stuck when i turn the key on so im guessing it the starter. im gonna pull it out tomorow and test it with some jumper cables. Any one ever heard of this.

One more thing....ROBERT you didnt send me my manuel with my carb man. I need to know how to tune this damn thing.

Rx-7Doctor

iTrader: (13)

The wiring to the starter is hooked up incorrectly. Recheck your work.

85rotarypower

Or the solenoid on your new starter is bad. Its not always a wiring issue. I had this problem with an old worn out starter on my car, replace the solenoid and it was fine.