weird knock

[catmandoo]

last week we had some -10f days and i was about 80 miles down the road and a d-a#* pulls out in front of me so i just press down a little harder on the pedal and fly by him,wel about the time i get pulled back over i notice that the pedal goes down but i start losing speed,(darn gellin)so as i slow down and get to town i pull into the gas station,and pull up to the pump,hping it will stay running,but not.so i pump 1/2 gallon of unleaded into it(had maybe 22 gals of diesel in the tank),let set and tried it and it fired up and died so i go pull the filter and nothing but nice diesel,so i put it back on and go inside for about 5 minutes and come back out and try it and after about 5 seconds of crnking it fires up,then i get the high rpm's from the usual filter chance,so think just air well it slows down and is missing on probably 4 cyls,then 3,then 2 then firing on all 8,but ever since then i have had a knock to it,it's not a deep knock like a rod or main,and whats weird is you can only here it inside,if you stand outside with the hood up and listen it sounds normal.it sounds kinda light ,i'm thinking maybe i bent a pushrod,or maybe and inj is taking a dump,they do have 160,000 on em,and i tested one about 6 months ago and it was at 1600psi.otherwise i'm at a lose as to what it is.it runs alright down the road no rough idle or anything out of the ordinary.

[eracers999]

Did you look at the crank pully??

Kent

[catmandoo]

didn't have time to check,when i got back to town i still had to drive to denver,i was thinking that same thing today cruising down the road,gonna go look right now.

[catmandoo]

checked pulley and it is perfect.

[patrick m.]

possible you leaned on the heater pipe, and bent it onto an injector pipe?
that type of contact will give you a knocking sound inside the cab.

[catmandoo]

wasn't near it.i'm gonna be changing inj's maybe tomorrow and i'm gonna pull the valvecovers and see whats up under there.