1987 Mazda RX7 Car will not start

Tiny
EUGENEPK
  • MEMBER
  • 1987 MAZDA RX7
Engine Performance problem
1987 Mazda RX7 Two Wheel Drive Manual 120000 miles

Car will not start but will crank. Had car at Mazda dealer. Test showed good compression; new plugs. Had thermostat & accelerator sensors replaced. Worked fine for a month or 2 but now same problem
Saturday, August 21st, 2010 AT 3:15 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do below to determine if its a fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 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, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing
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Saturday, August 21st, 2010 AT 3:43 PM

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