Call us at:
253-225-9962

Dodge Fuel System parts

Dodge

Air in our Dodge Cummins fuel system is not good. Our Cummins Diesels won't run very good, if at all, with air in the fuel system.

Diesel injection depends on high pressure to inject the fuel into the combustion chamber. If there is even a small amount of air in the lines the air compresses instead of building enough pressure for the injectors to function. Also, air in the lift pump causes low primary pressure. This in turn causes the injection pump to function poorly and many times will not start.  

As our 12 Valve engines age one of the primary causes of air in the lines is deteriorating metal, rubber and plastic hoses, seals, joints and parts. The most common culprit I have seen over the years is the fuel pre-heater / primary screen, as well as the flex lines and hoses. This introduces air directly into the lift pump suction exactly where we don't want it.  

We are now seeing an increase in steel fuel line problems. Both the feed and return lines that run along the frame and the lines that run behind the injection pump area are starting to rust out, especially in geographic areas where salt is used on the roads. To replace these lines use the LarryB's Tank-to-fuel-pump Marine Grade Fuel Line Kit

Diagnosis: First we must confirm that we are having a fuel pressure problem. This means a gauge. The simplest way to install a gauge is into the top of the fuel filter using a drilled banjo bolt and snubber combination. This way when the truck is running or just cranking you can see what the pressure is doing. We also highly recommend replacing the overflow pressure relief valve if your truck has over 100k on it.

Displaying results 1 - 30 of 31

Page:
  1. 1
  2. 2

Displaying results 1 - 30 of 31

Page:
  1. 1
  2. 2