Classicfordguy
Full Access Member
Since I bought my truck just under two years ago it has had a knocking noise, seems worse when the engine is cold and the timing retard or advance or whatever is on till it warms up.
I just went on a 2000mi trip to indiana pulling a trailer and the noise has become much worse. When sitting at idle the noise will come and go, on and off every 30 sec or so. I tried cracking the injector lines and none seemed to make it go away completely, it just changed a bit since the engine would slow as I cracked each line.
It does seem to go away a bit when I accelerate hard but not completely.
I have noticed recently that it is much easier to make black smoke. I used to shift at 1600 rpm going around town but now I have to shift higher to avoid black smoke.
The truck has 123K miles on it, its a 7.3L factory turbodiesel in a 94 F250, to my konwledge the injectors and pump are original, I just don't want to spend the money replacing them if the realy problem is something bad like a wrist pin.
You guys have any idea what it could be or things I could do to figure it out?
Thanks in advance, one day I'll buy a helm manual, untill then your guy's help is awsome.
-Rob
I just went on a 2000mi trip to indiana pulling a trailer and the noise has become much worse. When sitting at idle the noise will come and go, on and off every 30 sec or so. I tried cracking the injector lines and none seemed to make it go away completely, it just changed a bit since the engine would slow as I cracked each line.
It does seem to go away a bit when I accelerate hard but not completely.
I have noticed recently that it is much easier to make black smoke. I used to shift at 1600 rpm going around town but now I have to shift higher to avoid black smoke.
The truck has 123K miles on it, its a 7.3L factory turbodiesel in a 94 F250, to my konwledge the injectors and pump are original, I just don't want to spend the money replacing them if the realy problem is something bad like a wrist pin.
You guys have any idea what it could be or things I could do to figure it out?
Thanks in advance, one day I'll buy a helm manual, untill then your guy's help is awsome.
-Rob