Cat 2C4000:
Fuel Issue

Hello everyone i have a cat 2c4000 that has me going nuts. I recently done a transmission seal and after putting the engine back in found propane bypassing out the intake. I changed the vaporizer but problem persisted. I checked the sensor on the throttle body and the plunger was stuck so I cleaned it up and she ran for about 15 minutes no problem. After that again with the propane bypassing. Purchased a new sensor and installed no change. So now I've changed the fuel cutoff, the injector and on vaporizer #3. I've also tried changing propane tanks just for the off chance there was a problem with the tank causing it. Any ideas would be hugely helpful
  • Posted 7 Jan 2022 08:49
  • Discussion started by gsx1300rk6
  • Louisiana, United States
Showing items 1 - 1 of 1 results.
Does this truck have k21 or k25 engine if so l would start by checking pressure on Nikki converter first should be approx 4 to 5 psi with key on if checks out pull main injector and make sure o ring is not damaged on tip if every thing checks out you possible have stuck poppet valves in injector holder l would replace holder hope this helps
  • Posted 7 Jan 2022 16:23
  • Reply by Scott_
  • Pennsylvania, United States
Scott

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