Hey this seems to be the new hot topic injection pump questions. My 89 4D56 will barely start once started wont stay running for crap till its warmed up then it will run good as long as its moving once i stop at a light the RPM's just slowly fall and it goes to die but if i tap the gas pedal it revs up and is happy for another moment or two. the truck has 191000KM's on it i was going to send it in for a timing belt soon. when checking the oil tonight the top of my timing cover appeared a little wet and smelt somewhat like fuel do i have a bad seal or something with the injection pump any help on this would be great thanks and have a nice day.