Hey everyone, I just got done doing a engine swap with a reman long block from DFC Diesel. the motor has developed chug/knock at idle/driving randomly. No dtc's have been set. It feels like a fuel issue. Checked the injector harness at #2 and #7 seems fine. Check the FICM harness for rubbing/chaffing, no signs. Wiggled and shock wiring harness while truck was running and can not reproduce problem. Also truck isn't hold full prime overnight. I have a lift pump. Going to bypass the fuel filter head today and see. Any suggestions?
Intermittent chug/knock
- Thread starter sittinpretti03
- Start date
Had 55 people look at my thread and only one reply, which was a smart ass reply. Thanks for the help.
I would call the company you purchased the long-block from, make's the most sense. Rather then try and have someone diagnosis a drivability issue from a computer monitor , with no DTC code's to help point you in the right direction.
Ck the ground wires at the right front of the engine just above the oil pan, should be 3 of them. The top one came loose on my truck and would give me a weird fuel knock that progressively got worse.