P0300 Chevrolet -4.3l engine doesnt turn over after it died

Question

my engine started hesitating i had a code i pulled up p0300........the next morning i went out and try to start it it hesitated like it usaly does i went in side to give it a break and now it doesnt even turn over at all now and u can hear the full pump and the cylinders clicking on the starter ....i just replaced the distributor and the ignition coil and it still doesnt turn over ..........and i replaced the spark plugs ,wires, fuel pump, fuel filter, maps sensor, fuel pressure regulator sensor, throttle sensor, spider injectors, mass air flow sensor,,,,,,,,can u please to god help me i have been dealing with this promblem for 2 years now and this is the first time it wouldn't even crank over

Answer 1

If the battery voltage is good, I would tap on the starter just in case it might be bad, causing the engine not to turn.

or use a socket and 1/2 ratchet to move the Crank pulley to make sure the engine is not seized.

have you checked for intake leaks? if there no intake leaks

start by using 91 octane fuel from shell, and use Kreen, I've used it on the same engine that was misfiring and after 15 miles of driving the idle was nice and smooth, 

 

http://www.kanolabs.com/engCle.html