1987 Mazda RX7 Car Cranks but wont start has fuel injection

Tiny
JOE1853
  • MEMBER
  • 1987 MAZDA RX7
  • 4 CYL
  • 2WD
  • MANUAL
  • 147,000 MILES
Hi I have a 87 mazda Rx7 it was running but now will crank but wont start any help would be appreciated thank you.
Sunday, March 14th, 2010 AT 4:42 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Cranks but no start condition: Rotary Engine

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 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, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.
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Sunday, March 14th, 2010 AT 4:47 PM

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