Finally found out why my other pickup keep on ildling high and low. Use the old carb cleaner test and the 4th injector area responds to the carb cleaner. Looks like a warp or crack intake manifold. Do I have to take the timing cover, water pump, and EGR to gain access to the intake manifold or do the intake section just come out with the other on?

 

Why the hell would you need to pull the waterpump and timing cover to get the intake off?

Pull the upper half of the intake off then you can access the injectors, chances are its just a cracked seal you are seeing that is causing issues.

 

Already put new seals on the injectors, change out the fuel rail, and still leaking. A family member was looking at the engine and mention that looks like the engine might have overheated at some point. Also looks like all the gasket are not original too. I'm guessing that the engine might have been worked on before.

 

Ok. Was swapping out the intake manifold. All bolts and nuts out, back pipe to the exhuast manifold off, but still stuck. Am I forgeting something? I hope this solves the idling problem, if not probly the head has a warp.