Engine/Transmission (1998.5 - 2002) Pusher pump is noisy !!!!!!

[bsappington]

I recently install a cater 4600 pusher pump on my truck and it is very noisy. Also I have been seeing fuel pressures that peg my 30 psi fuel pressure gauge. On star up it runs about 16 psi. but after it has been running for a while the pressure starts to climb. It usually happens during stop and go traffic. I think I may be overhelming the pressure relief valve. I am not running any sort of bypass on the pusher pump and it is hard line completely.



I don't think that the noise has anything to do with the pressure as the fuel pump seems to make the same noise regardless of the pressure. It has been like this for some time and it is loud enough that you can hear it outside the truck over the engine.



The reason I am looking for a cure is beacuase I installed an external fuel pump from a ford van on my Jeep when I removed the stock fuel tank and installed a fuel cell. That fuel pump seems to have much the same noise and I can't stand it because it is louder than the engine.



Could it be air? If it is I don't see how to get the air out. Both systems work in much the same way the pump creates pressure that is set by a bypass valve and is then returned to the tank.



I was just hoping someone might know how to get rid of the noise.

I want to listen to the engine.



Thanks,

Ben

 

[KTobin]

The Carter 4600 pump can be noisy. I have the 4600 pusher but rather than hard line to and from the pump, I used a foot of rubber fuel line on either side to buffer the noise and keep it from telegraphing. The kit comes with a rubber issolator mounting and bracket, this helps also. If I listen for it, I will hear the pump, otherwise my engine drowns out the sound and I don't think about it. 30 PSI pressure spikes are a bit excessive! Consider a bypass. A bypass without a check valve will render the lowest overall PSI and considering the integrity of your whole fuel system up to the VP44, this can work fine. A 100% fuel restrictng check valve will give you the same readings that you are getting now. Somewhere in the middle may be your happy place. I coppied and modified a system by "Gary" http://community.webshots.com/album/69983989klpCFc and run 20PSI @idle and 12PSI @WOT.



Kevin

 

[R-N-R]

I used a piece of industrial floor mat between my pump and frame to dampen vibration noise.

 

[ThrottleJockey]

Somebody needs to rig us up a pot (potentiometer?) between the lift pump and the driver seat so's we can adjust our fp on the fly!



Brian