NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   I Fixed My Fuel Problem (https://www.nopistons.com/1st-generation-specific-16/i-fixed-my-fuel-problem-25783/)

Red12aRx7 09-30-2003 12:57 PM

Well I had to put a return line back into my system. I kept dropping pressure no matter what I did and finally it is fixed. We put a t-block on the feed line as close to the carb as possible and ran 3/8" in and out of the block and a 1/4" line out of the block back into the return line. My pump needed to pump 5 GPH to keep itself cool and with no return line the pump wasn't pumping even close to enough fuel, so with the return line it makes it a nice cycle and now my pump is ice cold. Thanx everyone for the help and if anyone ever has this problem, maybe try this. The reason I didn't have a return line in the first place is because the holley's don't have a return line on them and it wasn't anywhere in the directions to put one in, but tried this and it worked. Oh and to regulate the pressure you can put like brass fittings or anythign in the 1/4 hose that goes to the firewall and restrict the pressure and that is a way to do it so I don't use my regualtor anymore because it was being to restrictive. Well I can't wait to drive it now, still some tweaking, not a lot of high RPM power right now, but I had a stuck caliper, I had to buy a new one and my tires were 10 lbs down on air. I will let you guys know how it goes on THursday when I can drive it. THanx

drifter 09-30-2003 09:06 PM

Glad it was that simple.

Good luck, have some fun!

Red12aRx7 10-06-2003 01:29 PM

My car drives well but has no top end powe. Found out the secondaries are not opening. So I guess hunt for vac. leaks and change the spring for the secondaries. I would like to change it to mechnical but they don't make the mechnical conversion anymore. Anyone know what might be causing my secondaries not to open?


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