I have not had any starting issues for over a month while performing the daily routine of bleeding any air from the system every morning before starting since it had gotten cold outside.

Results of the first test drive with lift pump installed;
Throttle response and engine smoothness seem better.
But-- After shutting off engine, it would not restart This is the first "Hot" no start I've had.
After two failed attempts, I bled the pressure off of the filter head, then after a longer that normal crank time is started and ran fine.
Is a new MPROP going to be needed in the near future????

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TWO Identical 2005 Liberty Sport CRDS
#1 CRD, 174,000 miles. Eco tune, Samco hoses. Mobil1 0-40w used since day one
#2 CRD 143,000 miles. Bought used (unknown history) with 100,000 miles. Samco hoses.
Eco tune, new rockers, and 5 volt glow plugs installed at 124,000 miles

As a follow-on for that, how difficult is it to replace the MPROP, what is involved in the procedure?

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Proud supporting vendor of LOST Jeeps
TRAVELING CRD TECH. I come to you!
Need help? Just ask! I've taken it apart more than most.
Email jeep [at] maincomputer [dot] com - BOARD MESSAGING IS BROKEN
Over 225 CRDs currently driving with my valves, timing belt, rockers, or ARP Studs.
Bad noises = REALLY bad things.

Continued from this morning.
Spent the day in town doing errands, the jeep started just fine 7 times after shutting off while shopping.
Came home, unloaded the groceries and then nothing. Second time today it failed to start hot.
After five cranking attempts, I pulled the lift pump fuse and released all pressure off fuel head. Waited a minute and it fired up and ran fine, no smoke.
Is the lift pump aggravating a sticking MPROP?
GDE, what do you think, and do you still have MPROPs in stock for sale?

As soon as you think you have it figured out, the rules change

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TWO Identical 2005 Liberty Sport CRDS
#1 CRD, 174,000 miles. Eco tune, Samco hoses. Mobil1 0-40w used since day one
#2 CRD 143,000 miles. Bought used (unknown history) with 100,000 miles. Samco hoses.
Eco tune, new rockers, and 5 volt glow plugs installed at 124,000 miles

Scroll down to post #8 here: viewtopic.php?f=5&t=63799

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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.