2004 nissan frontier cylinder wont crank over sometimes

WELL ALL 96 UP CARS USA , sensor CKP
KA24DE engine real name. 2004 year
it is right next to the starter (rear of crank) 2 wires.

if obd2 scans shows its not bad it is not bad. (99% of time is not)
IT IS IN 1 OF 3 PLACES.(4)
FRONT OF CRANK SHAFT
CENTER OF CENTER
OR REAR (IN 2 WAYS)
THE ANSWER IS ALWAYS IN THE SERVICE MANUAL
https://eautorepair.net/Marketing/Default.asp

If the engine sounds as if it wants to start, it is possible that you just have too much gas in the manifolds or in the cylinders. Try the following: Turn on the ignition but do not start. Hold down the gas pedal for a minute or two. Then start the car without releasing the pedal. I know some will say this method will not work with "drive by wire" systems such as MO's but I think it will.

More than likely though, the problem could be the anti theft system interfering, or locking down the ignition. Close all doors and then using your key (not the fob) lock and unlock the doors several times and then try.

Check all earths are clean & tight

possible crank sensor. have the truck scanned for codes. If code P0335 that would be crank sensor. If not see if you have fuel pressure. mabey fuel pump went dead.

when you say -turn over do you mean firing-turning over to me means the starter motor is cranking or turning over-firing is when combustion happens in the cylinders-as far as the cranking continuing-try some wd40 in the ignition switch-it may be hanging up-Denny

clean the mass air flow sensor in the air filter tunnel

I’m happy to assist further over the phone at https://www.6ya.com/expert/james_1cb31da1bc8c6102

Unless the head gasket is leaking, I would think you are looking for something electrical that is not working when hot, or a fuel problem.
Do you know if you have spark and fuel pressure when it will not start ?

was flywheel replaced? i've had this happen on one turned out sensor ring distorted on flywheel.went through three until i got a straight one.how did bx look it came in?watch intake cam timing pid while cranking.....should be very close to zero degrees.if not suspect sensor ring damage.l

You probably inserted the pump wrong. The timing mark on the balancer must be at TDC. Then when you put the pump in, the rotoe should point in the direction of #1 cylinder. If you know that you had these things in order, you probably need to turn the crank one turn. If you set it up with an open valve instead of both valves closed, you are exactly 180° off. Tou can turn the distributor 180° and see if that helps but, it will mess with anyone else that would ever work on it.

what year is thsi and how many miles on it??