If it were mine I would decide on whether or not to take a calculated risk mainly depending on whether or not I knew for sure that the Timing Belt (TB) and water pump replacement had been performed . Next whether or not I was going to do the work myself or pay someone else to do it.
If its proven that TB and water pump have been replaced prior then I would probably just attempt to replace the glow plugs now and while doing this block egr pipe and unplug mass air flow sensor (the off road modification ORM ) or you could add tune either GDE or free from LOST. Then when its been about 70 to 80 thousand miles since TB maintenance or at about 170,000 miles on jeep I would plan on removing valve cover change to arp studs, replacing rockers, and valves and TB and water pump maintenance.
If TB info is unknown or not provable , I would proceed with all of above now or just change the glow plugs and (ORM) and or EGR block off.
Why not try and replace glow plugs you have nothing to loose, if you were going to remove head anyway. If you break one machine shop should be able to remove, Just soak with pb blaster get 6 star sockets, expose as much as possible and try to get extensions etc to get as straight a shot as possible to GP s and use firm but steady force and it may help to try to tighten slightly to get it broken loose. If they don't come out try soaking again with PH Blaster or similar and trying again. It helps to use something like a long curved needle nose plier to pull the wires off the GP s. Don't forget to use anti seize on the GP threads when reinstalled.
Of course there are all kinds of other stages of work or options that could be done. A lot is the cost benefit ratio and how many miles you plan on driving it. Remember no matter how many miles TB only good for up to 7 years.
Disregard part of this just realized you have already done the weeks kit and TB but the rest still holds true. Also will be a lot easier to get to the GP s !!!
Good Luck!
_________________ 05 Blu LIM, OME GDE Tbo, wk II 245/75/17, KC Lights, bull bar, 195K H TC 05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC 06 Bla Lim, GDE Eco, Destination AT 245/75/17, 151K, H TC 06 D Khaki Lim 126K wkII Eur TC 05 D khaki Lim 145k refurbishing All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden
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