i’ve got a pretty bad fuel knock i need help diagnosing. i’ve got my pump gear off and it looks like the previous owner advanced timing by 1/8th of an inch which is fine. i recently got my truck running and it idles fine for 15ish seconds then starts knocking. i’m stumped. i’ve got a whole bottle of hot shots injector cleaner in my tank, nothings worked. injector are new as of 5 months ago but the truck sat for 4 of those 5. i’ll take any help i can get.

 

Is the fuel dirty? Water in fuel?
Swapped the fuel filter recently?

Why did you pull your pump gear off? It is easy to bump the timing 1/8th of an inch without pulling the timing cover. No reason to pull the gear itself.

Maybe swap in the old injectors and see if the "knock" sound changes.

 

im struggling to get the gear back on. any tips?

 

What are you struggling with?
Is the key way on the pump lining up with the slot in the gear?

 

Is the knock cylinder specific?

 

yea, i can’t line up the E mark with the key and the mark on the cam