Fouled spark plug?
 

A couple days ago my truck developed a miss. On a cold start it has a noticable vibration at idle. When underway the miss is most noticable at about 1200 rpm and gives a considerable shaking vibration. It seems to do this all the time but is most obvious when the trucked is lugged down a bit at about 1000 to 1500 rpm.
Once the engine temp hits about 180 degrees the miss goes away.
No miss at all when at full operating temperature.

I have a EJw/A and normally run on setting 3. The miss is still there if I turn it down to 0 or up to 5. On the higher settings I have low boost fueling turned up for the smoke and I can see a noticable puff puff puff out the pipe.

The injector pump was replaced by the stealership about 40k ago, air and fuel filters changed 5k ago.

The truck just turned 159k.

Is this a sticky injector?

Hello?
Anybody home???

Fouled spark plug...............in a CTD??? :humm: Perhaps I didnt get the memo.........

I guess you only read the topic line and got completely stuck in the mud. :argh:
I will close the ticket and start another that will be void of any wit