1991 Mazda MX5 won't start

Tiny
RAYCHITS
  • MEMBER
  • 1991 MAZDA MX5
  • 4 CYL
  • 2WD
  • MANUAL
  • 86,000 MILES
I have plenty of spark! When I jump fuel pump up front with jumper wire you can hear pump running! I replaced ECU new fuel pump and new fuel pump relay! Still won't start plenty of spark! I cleaned all ground contacts that I can find still won't start! I also replaced MAS still won't start! I have replaced the four injectors! I check all fuses that are good! When I try to start without jumper wire no fuel pressure! When I jump fuel pump with jumper wire engine will run as long as I spray gas into throttle body! What am I missing!
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Tuesday, December 25th, 2007 AT 10:55 AM

1 Reply

Tiny
2CEXPT
  • MEMBER
Check for an injector/s pulse. You got spark and fuel pressure-when injector/s are not opening it will not give fuel to the combustion chamber. The new fuel pump did you check its pressure-could be new but defective not pushing the correct pressure.
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Tuesday, December 25th, 2007 AT 1:03 PM

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