Less mess that way ... if you are going to remove injectors form the rail...

https://www.f150online.com/forums/4819143-post13.html

MGD

 

ok, no injectors leaking. I"M STUMPED!

 

So how did you go about that ?

 

Pulled rail and injectors. Placed towel under injectors and turned key on. I thought that was it?

 

Yes, as long as the injectors were left in the rail and the pump charged the line/rail KOEO.

They shouldn't even dribble a drop. You check them all at once.

 

yep, all with fresh clean paper towels underneath, not a drop. Well what's next? VCT's? Maybe PCM is sending a bad signal to #5?

 

Like I said in the other thread to you. Compression test it, - look below = sig

 

I was blinded by rage. I guess that's next.

 

What rage again or a c test.

 

C test.

 

I don't think it's mechanical (what the heck do I know). I think the problem is electrical and somewhere between the PCM and the COPS. After I put the last 4 COPS in it ran great, I stepped on it hard, several times, and had no problems. Just makes me think it's nothing but ignition.

 

You may be right. Well, some of what I know for this problem type. -On the 3V you have an EGR, DPFE and EVR wrapped into one part. IF that part is goofing up on yuh from time to time, it will miss and the miss will jump all over.

Any one of the sub parts of the EGR Assembly can make that happen,- except for the DPFE itself. There's a poppet valve inside the EGR. If that's being forced open from the EVR or hanging from corrosion, your sucking in exhaust gases from time to time and they WILL misfire. Not just at one cylinder, -it will jump depending upon where it's at in the stroke when it occurs.

So, with your problems, the EGR assembly is a suspect. Should be checked out, - I might just thro a new one on for the heck of it. Don't like throwing parts at them, but I might here if I think it's flaky. To hard to diagnose when the problem comes and goes.

If the problem is constant now, that's a little easier to check.

 

I think replace the equivalent of Distributor cap & Rotor....

 

These are the codes the dealer read:
0300 0316 and 030x
with the above codes considered, and all plugs and cops replaced, that leaves the following:

*stuck open/ closed EGR
*camshaft position sensor
*damaged crank position sensor
*damaged PCM
*EGR system mal****ion



and just check DTC's and found 0430:

P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
Description: Indicates the bank 2 catalyst system efficiency is below the acceptable threshold.
Possible Causes: See the possible causes for DTC P0420.
Diagnostic Aids: See the diagnostic aids for DTC P0420.
Application Key On Engine Off Key On Engine Running Continuous Memory

P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
Description: Indicates the bank 1 catalyst system efficiency is below the acceptable threshold.
Possible Causes: Use of leaded fuel
Damaged heated oxygen sensor (HO2S)
Out of range engine coolant temperature (ECT) sensor
High fuel pressure
Damaged exhaust manifold
Damaged catalytic converter
Oil contamination
Cylinder misfiring
Downstream HO2S wires improperly connected
Damaged exhaust system pipe
Damaged muffler/tailpipe assembly
Retarded spark timing
Leaking fuel injector

Diagnostic Aids: Compare HO2S upstream HO2S11 and downstream HO2S12 switch rate and amplitude. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S very slow and reduces the amplitude of those switches as compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly with increase amplitude, approaching the switching rate and amplitude of the upstream HO2S. Once beyond an acceptable limit the DTC is set.
Application Key On Engine Off Key On Engine Running Continuous Memory
All — — GO to HF1 .
NOW I"M THINKING CATALYTIC CONVERTER IS CLOGGED

 

Nice & methodical - that's the ticket.

Just fyi - you can drop EGR from yer list (along with all the associated stuff like DPFE, etc) as a 3V does ot have an EGR system.

If a cat is suspected there are straightforward tests that can be performed - dealer or good exhaust shop.

Keep at it - between yer persistence and 'Brew's expertise, you'll nail it.

:beers;
MGD