Do you seem to have to "clear it out" once you start it up like it is loading up on fuel and flooding it? I know I can be too old school with some of the problems with my pickup trying to get the analog brain with a Holly to understand fuel injection troubles. If the timing was never changed from the original, I wouldn't mess with it except for looking for vacuum leaks.

Fuel injectors are supposed to fog or mist the fuel into the head or manifold, if the rack pressure is not right, it will dribble the gas in there instead making a perfectly good ignition system worthless. So we go off chasing the ignition system when that is not the problem and spending a lot of money in the process.

It is a good step coming here asking questions. If you have a book on your pickup, I would sit down and read it for an hour or two. Do some deductive reasoning before throwing money at the problem. That was one thing the owners like about me when I was a big truck mechanic is I would save them money. If they ever tried to hurry me, I would just go over to my box and start putting my tools away for the day. I once had my boxes in the pickup ready to quit and the begged me to unload them and stay.

I guess that is why I don't mechanic for truck companies anymore. I can't stand turning wrenches for idiots.....and most of them are.