General Category > Quadrajet Carb Talk and Tips
Fuel pressure issue
73ss:
--- Quote from: 77cruiser on September 17, 2021, 10:52:48 AM ---I've been using this pump for about 3 yrs. with no problems. The install isn't quite as neat as I would've liked.
https://www.aemelectronics.com/products/fuel-delivery/high-flow-fuel-pumps/340lph-high-flow-in-tank-fuel-pump-offset-inlet
--- End quote ---
How did you install it? Kit or fabricate a sending unit?
77cruiser:
I fabbed it up, it's a tight fit through the stock hole in the tank.
qjetsrule:
Interesting video if you're using a liquid filled gauge
https://www.youtube.com/watch?v=3n_X8cbdJ64&t=134s
old cars:
When reading fuel pressure, keep in mind that a fluid filled pressure gauge will change it’s reading as the temperature of the gauge case changes (Under hood temperature). Because it’s sealed to contain the liquid inside, a liquid filled gauge no longer compares line pressure to actual atmospheric pressure, reporting the difference. Instead, it compares line pressure to the pressure inside the gauge case. As the liquid in the case heats or cools, it expands and contracts, causing case pressure to change as much as 1 psi for every 30 degrees temperature change of the gauge
Cliff Ruggles:
I ran into this issues back in 2000 when I installed my current fuel system with a regulator and gauge mounted in the engine compartment. The gauge had a small removable rubber plug on the back. I drained the liquid out and it has been working fine now for over 20 years no matter how hot it gets under the hood........
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