First thing you might want to try is remove all the plugs, drain the oil, and flush out as much water as possible. Will it crank over without the plugs in?
Do that first then see if it has compression. If it does, throw it back together and see if it fires up...
My 5.2L Build thread
-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
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