Won't star after tune up but cranks over - 1993 Jeep Grand Cherokee

try this link... Troubleshooting Car That Won Start dummies .or this one... Problem 5 Engine Cranks But won Start

Check all your fuses, you may have accidentally blown one or more that would cause your problem.

Someone will need to find out if you are missing spark or fuel to proceed.

ON THE PT CRUISER, IF IT WILL TURN OVER CHECK YOUR FUSES UNDER HOOD AND RELAYS, STARTER,IGNITION SWITCH,AND FUEL PUMP PSI.,IF IT TURNS OVER TAKE IT TO TUNE A CAR.THEY ARE CHEAPER THAN THE DEALERS BUT THEY ARE GOOD.

tune up,fuel filter,

not sure what you said but.
seems the battery is discharging,? 12.6v is fully charged,
own a voltmeter?
try a good loaned battery , does it start the car,?
i think you meant?
i can jumper cable start my car at any time. (off another running car)
but after running my car, the battery discharges and it will not crank at all. right?
this means ,the charging system on your car is bad.
if the starter cranks great, then the engine is flooded or is in great need of a tune up (sparkplugs etc)
if flooded try the super secret in the op guide, crank with throttle wide open , this magic trick cuts all fuel injection allowing the flooding
to purge away, and eventual starting.
my guess 2 is the car wont start, so you crank the battery flat
you jumper start it and it runs. (luck)
then day 2, same deal cranks ok but wont start.. ever tune up the engine?

recheck the wires where put on right and see if it runs better

has it been a while since a tune-up has the fuel filter been changed.have the fuel pressure checked with a gage and compare it to spec.has the check engine light come on when it was running you could have a code in the ecm.

It seems the timing is advancing well. have a tune up at service center. Starter must also be checked.

Cold stars is hard when batery is uncharged.