I recently installed a new injection pump on my 04 dodge due to it leaking fuel. Install went fine, but now I get a hicup at about 2800 act like its defueling/rev limiter or something so I took the quadzilla off and its gone but im.getting a miss on a slightload going down the road or up a hill you just feel it slightly. Has anybody experienced such thing or could lead me into the right direction on to finding or fixing problem thank you!!

 

Change your fuel filter and see if that fixes it.

 

Sounds like shaky fueling. You need to monitor fuel feed pressure at the inlet to the rail pump. You need a minimum of 6.5 PSI at WOT, any less and you are endangering the rail pump.

 

Im changing filter tomorrow. but steve-l how can i go on monitor pressure? scanner?

 

There is a fuel line from your fuel filter to your rail pump. This line connects to the rail pump by a banjo bolt. You connect a gauge at that banjo bolt. I have a 3 gauge A pillar setup, the bottom gauge is my fuel pressure. When you do this, be sure to use a fuel isolator. It is a small aluminum casting with 2 covers. In between is a rubber diaphram. On one side is the fuel from the banjo bolt T fitting. On the other side is the tube that runs to your gauge into which you run anti freeze fluid. This way fuel is not run into the cab for safety.....very important. Once the gauge is installed, it will be easy to monitor the feed pressure and detect any change that occurs before damage to the rail pump can happen. Please note that it is normal that the pressure will drop in the winter with temperature about 1-2 psi. The new Dodge tank pump supplies 8.2 psi in the summer after the filter at the rail pump input and about 7 psi in the winter when the fuel viscosity increases. If this nominal pressure starts to decrease, change your filter. Consider the number of unnecissary filter changes you have made in the past and their cost. That savings alone will pay for the cost of the gauge.

 

Dont mean to scare but I just had the same feeling in my truck and my turbo went out the next day.

 

Changed filter, didnt put enough miles to see if problem. It all started right after the pump install im going to call the company tomorrow and see if I can get another pump. The truck just acts like it hit defuel and no pedal response till you shut the truck off restart it. Starting to upset me and need a reliable truck

 

I have my truck in the shop for the same symptoms. Thought it was Turbo but it ended up being low fuel pressure due to junk in rail and injectors. Dealership did a cleaning