car tries to crank but want on 2003 Nissan Altima

i replaced the spark plugs boots and coil packs. the pcv valve crank and camshaft sensors. it turns over and tries to crank but wont.

Asked by for the 2003 Nissan Altima
2 answers
Throwing parts at a car trying to get it to start is an expensive way to fix something. Have your car towed to a reputable shop for a proper diagnosis and have them make the proper repairs.
crank sensor is a common failure that results in extended crank time. it is buried behind the motor by the motor mount.
before you do this, it is a good idea to get a real diag to pin point the failure.