General Category > Quadrajet Carb Talk and Tips
Quality, reliable mechanical fuel pumps
Cadman-iac:
--- Quote from: tayto on July 03, 2025, 11:00:35 PM ---make sure to retain the oil switch in the fuel pump circuit. it is usually just above the oil filter on the TBI trucks, but you can use the oil gallery under the distributor as well. this serves 2 purposes, 1. if your relay dies, once you crank enough to get above 5 psi, the pump will energize from the oil switch alone 2. takes load off the relay contacts for longer contact life.
also don't use regular fuel line in the tank,.you need to get fuel hose rated submersible. usually black hose with a pink stripe on it.
--- End quote ---
Tayto,
I lobotomized the computer once I decided to go with the carburetor. I removed the check engine light and replaced it with a choke indicator light.
Unfortunately I couldn't make the pump relay work in conjunction with the choke and light. The electric choke coil would draw too much of the current that the relay would not energize.
Not sure why it didn't work, but I gave up trying and just wired the relay through a switch under the dash instead.
Would you know how to get the factory pump relay to work through the oil pressure switch and also energize the electric choke and the indicator light?
The only way I can see to do both is to use 2 different oil switches. Any suggestions?
Rick
Kenth:
Good luck finding a quality American product for cheap.
For cheap you get a Chinese product no matter what it says on the box.
And yes, the box may be made in the USA but the contents may not.
FWIW
Kenth:
These guys seems to have quality products:
https://www.magnafuel.com/carbureted-regulators.html
https://robbmcperformance.com/products/regulator_bp.html
taguy4:
Why couldn't you just use a Carter M4891 style mechanical pump with a Jeep Wagoneer fuel filter, which has a built in return line port? I never liked the idea of putting an electric fuel pump in the gas tank for a number of reasons, and external electric pumps have problems of their own, such as being able to put them in the best location and wiring them properly so they are safe.
quadrajam:
Cadman, check out revolution electronics fuel pump controller 12003.
Available from the mfg. or several other online sites. Made in USA.
about 75$. Doesn't need oil pressure logic, works from tach signal.
I have one but have never got around to installing it yet. Gonna
have to put it on the DO list.
QJ
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version