2000 DT466
When the truck is cold it runs well, after about 15 minutes of driving once it gets warmed up we are getting a misfire with puffs of white smoke & loss of power. We pull the truck off to the side of the road and let it sit, fire it up and it will run fine again for 10-15 minutes.
We have done oil & filter, fuel filter, priming pump, check valve ball, ICP, IPR, Cam Sensor, 6 new injectors (3 were bad so decided to do 6), new fuel lines, new ECM (other one was garbage). The truck has been driven with fuel gauges on it mechanically and on the scanner and fuel pressure is fine. It runs the same with ICP plugged in or unplugged.
Is it possible that once the oil heats up that the HPOP is struggling to maintain pressure because it is on its way out? Or perhaps the lift pump
Has anyone had an issue with the fuel pressure regulator on the back of the head with similar symptoms?
If anyone has experienced this and has any suggestions they would be greatly appreciated. Thank you
2000 DT466 Odd Misfire / Shutter
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Klwjax, Aug 11, 2022.