E150 4.6 problem

[spareparts]

I'm trying to resurect the half ton van I have(03 E150, 4.6 auto), I'm either going to fix it and sell it or part it out like it sits. I've been messing with it for a while. I've eliminated several things, now I'm down to it missing on four cylinders(doing it from teh beginning). I don't know Fords curent cylinder numbers so I'll put it in boat terms. STB side back two cylinders are not hitting. POrt side center two are dead. New plugs, cleaned injectors, good fuel pressure. Got me baffled, something has these four cylinders tied together. I've had the coils off and the injectors out so many times, they have had to gotten mixed up, still the same four holes are dead. Any ideas?

[THEFERMANATOR]

Have you checked them for spark? Have you tryed giving it some propane while it's running to see if they will come in?

[spareparts]

its coil on plug, so its hard to tell if its sparking, I can remove teh coil input wires adn I'lll get a code for coil output. Propane? for vacuum leaks or running lean?

This thing had been running good(for a Ford), I dumped a bunch of old gas out of an old car(filtered thru two racors) at church that the Methodist Men had up for sale(long story), the next day I started it up in hte morning and it started running like crap, I figured I'd screwed up the injectors. I pulled them out and cleaned them as best I could(don't ask how). I noiced two of the plugs were completely carboned up to the point you couldn't see the center electrode. I put a set of plugs in it after I cleaned the injectors, still ran like crap(same four cylinders). I put two cans of power tune down the injector holes(faster to pull the injectors than the plugs) to get the carbon out(now it smokes). I cleaned the injectors again, cleaned the plugs. Still runs like crap, I didn't have time to screw with it so I parked it for a while. One I got back on it, I started from scratch. I pulled the tanks and cleaned it out, it was pretty clean, I put a new sock on the fuel pump. I pulled the injectors out and sent them to InjectorRX, flow sheet was pretty ugly. I flushed the lines, put in fresh gas, new filter, new plugs. Put everthing back together, it ran better, but still runs like crap. A couple of symptoms, the power lags behind the pedal, its like its hooked up with a rubber band, it will turn up to around 3000 and thats it, when you give it more gas under load it starts spark knocking something awlful. I got it on the road and drove it around, not much better, smokes pretty bad, but its only running on four. I elimnated the convertors, took each coil and cleaned the contacts, cleaned the wire to the plug, packed them in dielectric grease before installing them back in. Its got me puzzled. Whats one of the these 4.6 sound like when it jumps time? DO they do it often? BTW, its got right at 100,000 miles on it.

[THEFERMANATOR]

Get you a propane torch and feed some into the intake while it's idling and see if it smooths out. You can also use carb cleaner and spray that in and unplug the fuel pump relay so that it will run only on what you are giving it. This will tell you if it is fuel or spark related.

[Skools Out]

read under this that i posted may be your issue as well i've seenit do this a piece of carbon may have the EGR valve stuck open.

http://www.wellcraftv20.com/community/showthread.php?t=13433&page=2

[spareparts]

I was thinking about the egr, I had allready pulled it out and looked at it, it didn't sem to be too carboned up, I pour cleaner in one side and it didn't leak thru to the otehr side, but it sure acts like it when it runs, especially missing on just a few cylinders and carboning up the motor

[garagenc]

Spare
I have the same mtr, I do know if you don't put the coils back on the cyl they came off of the mtr will miss. I had it happen to me, I mixed 2 up and mine missed until I switcched them back.

[spareparts]

Lee, why would it make a differnce? Can't figure that one but antghing is posible. hell, i have had these coils off so many times theres no way they are back in the same holes, man this motor is a pita!!! Any one want to buy a Ford van? Cheap?