If number 3 is a standard problem, swap injector 3 with number 1, and see if that problem migrates with the injector.

 

thast a great idea! i should have thought of that. OK i'll swap some injectors plus i wanna do a vacume leak test with some carb cleaner to see if i got any leaks but i'll let you know what i find out. wonder if there is a way to test each injector individually

 

Start the engine. And unplug them one at a time. RPM drop for each cylinder should be REALLY close. If not..... well, there's a possible problem.

Carb cleaner won't find a blown plenum. Look down your throttle body, see if you see any oil.

 

Cmon guys! your killing me!! I FIXED THE PLENUM GASKET ALREADY!! lol Its on youtube for christs sake lol

Its not a big issue right now as I said the truck does run and sound pretty soundly just a minor reverse stalling issue sometimes so i'll keep you all posted