10:10am. Air Temp: 70 degrees, humidity 35%. Had been running on the freeway at 70mph for about 10 minutes. I slow down to exit and I start to feel some sort of rough vibration, felt like chadder or a rough pavement. When I come to a full stop, I realize it's the engine (sounds like cylinders are skipping) and I have zero acceleration. I limp to a parking lot about three hundred feet away and kill the engine.

No CEL.

Let it sit for about twenty seconds, fire her up again and engine is still missing cylinders.

Open the hood, stare at the engine for a second and then pump the fuel primer. The first couple of pumps are very soft, steadily increasing in resistance until about pump #15 when it's totally stiff.

Go back in the cab, turn the key & the engine fires up like normal.

Continue on the rest of my day, no more issues.

Soooo....I'm thinking...lift pump?

_________________
2006 CRD w/99,300 miles
F31 from a previous life
EHM @ 42K, ProVent @ 79K
GDE Eco Tune & TCM @ 46K
Engine mounts replaced @ 55k/93k, Timing Belt @ 90k
Lift Pump @ 97k
OME Lift, 1.5''
Kenwood TM-V71 Ham Radio / Cobra C75WX CB
Surf Racks

Sounds like it, but if it isn't you should do it anyway to eliminate any variables and furture problems with air.

_________________
2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

Ding, ding, ding. We have a winner!

_________________
Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

I am thinking, when is the last time you changed the fuel filter? That pump is not supposed to be stiff at all times. A fuel filter is all it took to fix my last fueling issues.

_________________
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

Fuel filter: not sure if it's ever been changed. I'm the second owner and bought it at about 44K miles. Good point!

_________________
2006 CRD w/99,300 miles
F31 from a previous life
EHM @ 42K, ProVent @ 79K
GDE Eco Tune & TCM @ 46K
Engine mounts replaced @ 55k/93k, Timing Belt @ 90k
Lift Pump @ 97k
OME Lift, 1.5''
Kenwood TM-V71 Ham Radio / Cobra C75WX CB
Surf Racks

Just changing the filter is not complicated enough for this forum... please don't interrupt the serious business of critically over-thinking things...

Thank you.

_________________
2006 CRD http://www.UtahPowderCoatings.com/ http://www.gorecon.com/ I'm kind of a big deal.
RL rear bumper, ARB front bumper, Mile Marker winch, Power Tank, Skids by Mopar & Skid Row, RL Super Skink Sliders, 235/85R16 MTR, Air Flow Snorkel, DTT, 4.10 gears, Frankenlift II, Katskin leather, JL Audio stereo, Rosen video.

Actually we might have been giving him credit for doing normal upkeep like changing filters on time. That's not "over-thinking" in my book

_________________
Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

Replaced the fuel filter over the weekend. Checked for water in the old one--negative.

It was a bit of a pain getting the old filter off and on with my filter wrench (not much room to maneuver). I got the feeling that the old one wasn't as tightly screwed on as it should have been. Could a leaky seal have allowed an air bubble to build up in the top of the head?

Don't know if it's my imagination, but there seems to be less white smoke on WOT now and the rig feels peppier in general.

_________________
2006 CRD w/99,300 miles
F31 from a previous life
EHM @ 42K, ProVent @ 79K
GDE Eco Tune & TCM @ 46K
Engine mounts replaced @ 55k/93k, Timing Belt @ 90k
Lift Pump @ 97k
OME Lift, 1.5''
Kenwood TM-V71 Ham Radio / Cobra C75WX CB
Surf Racks

Sounds like you fixed it, may have just been a plugged up filter? Good Job

I just use one of those filter wrenches that look like a pair of channel locks, to loosen the filter, then just pull the fuel head assembly off, and disconnect the WIF wire with no under vehicle work.

_________________
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

I get mine from underneath. No more skinned knuckles; only fuel down the arms.

_________________
Joined the CRD family in July '10. Found a near mint '06 limited, Inferno Red. All stock except lift pump and GDE ECO-Full Torque. Lovin it!