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1993 Nissan 300ZX Car won't start

Tiny
WDOT33
  • MEMBER
  • 1993 NISSAN 300ZX
  • 6 CYL
  • 2WD
  • MANUAL
  • 108,350 MILES
I recently replaced alternator, water pump, thermostat and belts when I first started the car it ran fine. I turned it off it hesitated to start and ran for a while and began making a weird noise I turned it off now the car will crank but, it won't start. I can hear the fuel pump also.
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Saturday, May 22nd, 2010 AT 12:30 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do below

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 in away from ground have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor /distributor pick-up coil, ignition control module, ECM, Ignitor camshaft and crankshaft sensors and computer. Note: If it doesn't apply disregard it
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Saturday, May 22nd, 2010 AT 1:16 AM
Tiny
WDOT33
  • MEMBER
  • 3 POSTS
Will give that a try. Let you know how it turns out.
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Sunday, May 23rd, 2010 AT 6:28 AM
Tiny
WDOT33
  • MEMBER
  • 3 POSTS
I tried everything even replaced the Camshaft angle sensor. I checked ecu was get codes 13 and 21 resolved codes and I'm down to a 55. But the car still won't start I cleaned the plugs to the PTU and I am under the belief that it's a bad unit
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Wednesday, May 26th, 2010 AT 4:42 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Are you getting the correct fuel pressure and injectors are pulsing and a blue snapping spark? If so check the valve timing.
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Wednesday, May 26th, 2010 AT 4:59 PM

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