the valve cover gaskets almost never leak. you should not need new gaskets.
pretty easy job, by yourself if youve never done it before id say hour and a half, two hours.
if you pressure wash your engine make sure you cover the alternator and the rest of the wiring/electrical components.
i always clean my engine at the carwash too
it also says no mud
they probably hate me.
you can use either a 13mm or 9/16 for the valve covers bolts, i know the 13mm works but cant remember the standard size.
the glow plugs themselves are 10mm deep socket, 1/4 inch drive is the only way to get them out.
then just plug the white wire back into them.
the easiest way to get them back bolt is to lay on top of the engine and just reach back their with the socket and loosen it, then just get it out the rest of the way by hand.
you can use shop air for most of the bolts with the proper extensions and sockets.
oh and theirs no vacuum line to remove.
i was disappointed when the international uvch i bought said made in china...
99.5 f250 7.3 4x4 257k
PHP Phoenix, S&B CAI, 4" TBE, Hpx, Stancor, RR Billet Wheel, AIH Delete, Autometer Gauges, Leveling kit, Transgo kit, Warn Hubs, Int'l Up-Pipes, RR IC Boots, Non-Ebpv Pedestal, High Flow Outlet, RR OCR, 08 Tow Mirrors.
Dad-2000 7.3 108k miles, Autometer Gauges, Superchips 1705, AIH Delete, 6637, 4" TBE, BD Billet Wheel, TruCool Max