I"ve read numerous posts, but i'm not seeing anything that really could help, including the dealers. And i've been to several of them, and tired on them coming back with no answers.
So here is my question?
it's a 2005 liberty and starts great with no problems, no matter how cold, i live in South Dakota, and I"ve had it start at almost 20 below with no engine heater!
but, after the engine is at operating temperature, no matter outdoor temp, when i shut it off, that is when the trouble begins.
It will take at least 4 to 5, 15 to 20 seconds of cranking to get it started.
i have changed the fuel filter, added a lift pump, purged the air, many times, use power service all thru the winter, and nothing helps.
i used a scantool scanner and watched it while cranking, and it starts at around 650-730psi fuel rail pressure, and idles around 5000psi. (when warm, it will start cranking at 380 - 520 psi and then go up after alot of cranking)
what else should i be looking for with this engine, the engine has 96,000 miles and been GREAT! so far...
i just wish it would start when warmed up.
thank you,
ken

You say you purge the air, 'many times' - are you getting air out?
with my lift pump - the fuel head pump was solid - always - no air.

so I'm think that you have enough of a fuel head air leak to continue to be a problem.
although - I would expect cold starting to be harder that warm - I don't understand that.

if it's not - then you've exhausted my diesel troubleshooting skills
there should be something that controls the timing of the injector pulses - but I don't know what that it.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

I have had a number of old vehicles, diesels included, which had malfunctiong check valves in the fuel lines. If the engine is hot it can cause the fuel to boil or off gas which creates an air pocket in the line right next to the engine, which gives the exact symptoms that you describe. If you are having this problem, Power Service will exacerbate it, especially the PS 911, because of all the alcohol in it. Fresh unwashed biodiesel is notorious for doing this as well if it still has any meth left in it. When I blend fuel in summer, I know I'm getting too much gasoline in the mix when it starts to vaporlock on a hot shutdown. I don't know if the KJ has a check valve in the fuel head, but it might be worth your time to check it.

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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.

There is a check valve in the filter head for the primer and some lift pumps depending the one installed.

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2006 Black Jeep Liberty CRD Limited
K&N, Samco Hoses, Michelin 245/70-16 LTX A/T2, Fumoto F-102, V-Force Muffler, Mopar, Hitch, Trailer Wiring, Skid Plates, Slush Mats, Rear Shelf, Predator Stage 1, Transgo, ORM & CodeReader, Facet 40109 Pump
"IT'S A DIESEL THING, YOU WOULDN'T UNDERSTAND"
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