My wife drove our Liberty CRD to Noblesville (north of Indianapolis) and about 1.5 hours from our house. On the way there, she got fuel (about 30 miles from the destination). When she was about 15 miles from the destination, she started to feel a bit of hesitation and stutter from the engine. She put it down to going from 70 MPH to 20 MPH in town. She arrived and stayed at the event for a couple of hours and went to leave only to find the the Jeep didn't start up right away.
She called me and I made the trip there and she got it to start, but it was like it was running on 2 of the 4 cylinders. It would belch white and blue smoke and have no power - rev'ing only up to 2000 RPM.
So, I checked the connections and everything seemed okay. I checked the fuel filter (that was replaced/converted with/to a CAT) about 8 months ago and found the it had some air in the mix. I bleed the air out, but the symptoms didn't change.
There are three things I can think of that could cause this:
1. the fuel pump is not pumping well enough to deliver the fuel properly
2. the fuel filter is clogged and not providing sufficient flow
3. an injector or two has become clogged or is electrically not delivering the fuel
Also, pertinent to the story is that I just had an ECM tune and have had a check engine light (CEL) on most of the time since - have been trying to figure it out. It goes out every few days and I was thinking it might be the MAP sensor (which I cleaned about 1.5 months ago before I got the tune). I noticed that the CEL is now off while the engine is running poorly (go figure).
Since the symptoms started shortly after getting fuel, I would ordinarily point to the fuel from the station. But we have got fuel there before several times, and I'm reluctant to start there.
Anyone had these symptoms or have any good ideas on how to proceed getting my Jeep back on the road? Also, does anyone know a good place in the Indy area for servicing my Jeep Liberty CRD? Thanks for reading this involved post and for any help you can offer!
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Steel Blue 07 Jeep Grand Cherokee CRD

Mopar Skid Plates/GDE Programmer/Fumoto Oil Valve
80K+ miles & still smiling

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