I cant seem to find out whats causing this code. It idles fine when cold but as soon as it gets up to operating temp it idles rough, but drives fine. I swapped the number 2 and 3 injector and code stayed with the number 3 cylinder. I just replaced the glow plugs cause number 3 was cracked, changed timing belt and deleted egr.

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05 jeep liberty Kerma tuner, K&N filter 3 in. lift,
99 dodge 2500 jvd torque enhancer, 200 hp injectors, fass 150, 64/71/14 turbo, k&n cai, arp studs, hmr dual disk clutch

You sure your Kerma tuner is not causing the problem?

I cannot find the P0303 code in my 2002 DTCs and the 2006 DTCs only states that it is a misfire for cylinder 3 with advice on what to do for the 3.7 gasser but nothing for the CRD.

How have you extracted that code?

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2002 Export CRD 2.5 Sport

If you look in the 2006FSM (05 FSM lacks code info) that's linked on Sir Sam's NOOB site on pg 9-895 you will find P0303 listed as a valid diesel code but it's still misfire on cylinder 3. Don't know if the diagnostics will help.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs

Were any of your old ceramic glow plugs missing their ends when you changed them out?

Bad news if so....

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Silver 2006 KJ 2.8L CRD Limited:
GDE ECO Tune / Fumoto Valve / E-Tecno GX3123 7v Glow Plugs / 2nd Gen Fuel Head / Mishimoto RED Hoses / Rockers/Lifters @ 114k / Hayden FC + 11 Blade Nylon / Sears P1 Battery / Transgo 45RFE-HD2 Reprogramming Kit / Timken Front Bearings

No luckily, number 3 just had a crack in it

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05 jeep liberty Kerma tuner, K&N filter 3 in. lift,
99 dodge 2500 jvd torque enhancer, 200 hp injectors, fass 150, 64/71/14 turbo, k&n cai, arp studs, hmr dual disk clutch

If it were my engine and I was trouble shooting it, I would probably say that it's either a bad/clogged injector at this point, or an issue with the ECU programming.

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Silver 2006 KJ 2.8L CRD Limited:
GDE ECO Tune / Fumoto Valve / E-Tecno GX3123 7v Glow Plugs / 2nd Gen Fuel Head / Mishimoto RED Hoses / Rockers/Lifters @ 114k / Hayden FC + 11 Blade Nylon / Sears P1 Battery / Transgo 45RFE-HD2 Reprogramming Kit / Timken Front Bearings

Stupid question I suppose but how is a misfire detected on a CRD?
There are not any knock detectors....I presume it is the monitoring of the individual fuel injectors' current flow.

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2002 Export CRD 2.5 Sport

Maybe you should try swapping injector 3 again...this time with number 1.

I know from my 34 years in fixing mainframe computers and industrial robots I would sometimes take out Part A and put it aside. Then I take out Part B and put it next to Part A. Then I get distracted and pick up the parts in the wrong order and put them back in their original positions but think that I have swapped them over.

At least I can own up to this now....I am retired and can not be fired.

Just saying. If you are sure you did not such a dumb thing then please ignore this advise.

Could be a wiring or connector problem....try measure the injectors leads all the way to the ECU.

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2002 Export CRD 2.5 Sport

i numbered them before i removed them so i know i got them swapped correctly. i guess ill start chasing wires and see if i can find bad spot.

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05 jeep liberty Kerma tuner, K&N filter 3 in. lift,
99 dodge 2500 jvd torque enhancer, 200 hp injectors, fass 150, 64/71/14 turbo, k&n cai, arp studs, hmr dual disk clutch