i just had 6 new injectors replaced at a dodge dealer and went to pick it up and it runs like crap worse than before. runs rough at idle and driving. blows a little smoke while idleing. they have not rechecked it yet i think i have been put on the back burner. what could this be, anyone heard of this

 

I guess the injectors weren't your problem. Very seldom do all 6 injectors go bad unless you have other issues, such as water contamination. Then you will have rust in the fuel lines which may have gotten into new injectors. Or the FCA could also be bad. Were they installed properly? If not you could have high pressure fuel leak internally, where the HPC meets the injector.

CAUTION: Two different fuel injectors are used (early and late). Although they physically look the same, they are NOT interchangeable. Be sure to reference the injector part number when replacing a fuel injector. This part number is laser-burned onto the injector. Failure to replace with the proper injector will cause severe engine damage.

Inspect fuel injector:
Look for burrs on injector inlet.
Check nozzle holes for hole erosion or plugging.
Inspect end of nozzle for burrs or rough machine marks.
Look for cracks at nozzle end.
If any of these conditions occur, replace injector.
Thoroughly clean fuel injector cylinder head bore. Blow out bore hole with compressed air.
The bottom of fuel injector is sealed to cylinder head bore with a copper sealing washer (shim) of a certain thickness . A new shim with correct thickness must always be re-installed after removing injector. Measure thickness of injector shim . Shim Thickness: 1.5 mm (.060”)
Install new shim (washer) to bottom of injector. Apply light coating of clean engine oil to washer. This will keep washer in place during installation.
Install new o-ring to fuel injector. Apply small amount of clean engine oil to o-ring.
Install injector into cylinder head with male (high-pressure) connector port facing the intake manifold. Push down on fuel injector mounting flange to engage o-ring and seat injector.
Tightening Sequence:
Install fuel injector holdown clamp (mounting flange) bolts. Do a preliminary tightening of these bolts to 5 N·m (44 in. lbs.) torque. This preliminary tightening insures the fuel injector is seated and centered.
After tightening, relieve bolt torque, but leave both bolts threaded in place.
Install high-pressure connector and retaining nut. Do a preliminary tightening to 15 N·m (11 ft. lbs.) torque.
Alternately tighten injector holdown bolts to 10 N·m (89 in. lbs.) torque.
Do a final tightening of the high-pressure connector and retaining nut. Tighten to 50 N·m (37 ft. lbs.) torque.
Connect injector solenoid wires and nuts to top of injectors . Tighten connector nuts to 1.25 N·m (11 in. lbs.) torque. Be very careful not to overtighten these nuts as damage to fuel injector will occur.
Install exhaust rocker arm assembly. Refer to the Diesel Engine section.
Set exhaust valve lash. Refer to the Diesel Engine section.
Install high pressure fuel line. Refer to Torque Specifications. Be sure to use a secondary back-up wrench on the connector nut (fitting) while torquing fuel line fitting. Refer to Fuel Line Installation for additional information.
Install valve cover. Refer to the Diesel Engine section.
Install breather assembly.
Connect negative battery cables to both batteries.

 

it was done at a dodge dealer under warranty, only had 3 bad injectors but i used to work there in parts dept so i talked them into changing all 6. im thinking maybe something wasnt installed properly. would the fca cause these symptoms because it starts right up but just runs like crap. it has an industrial diesel modified cp3 i called them and they said they use the factory fca on their pumps. im stumped and the truck has been there for 2 weeks

 

1st...Any results 2500Beast?

2nd...BigIron70, need some of your thoughts/time.

You seem to know your stuff and seem very helpful...

I had my #3 injector replaced about a month ago, ran 500 miles, changed oil.

A few days ago I noticed a raw fuel smell, no drips or anything, but my oil was about 1/4" above full.

I took her in today and they are saying the #3 injector is bad.

I barely got 2 tanks of fuel out her before it failed again.

I run Quadzilla standard, but only on PL2 (60hp) since the first failure thinking that maybe PL3 was causing too high of Rail Pressure and killed the 1st injector.

Any thoughts?

Thanks in advance, Adam