1992 Mazda MPV my Mazda wont start

MAZDAMIKE

MEMBER
1992 MAZDA MPV
6 CYL
4WD
AUTOMATIC
235,000 MILES

My 1992 mazda is a great runner it has lasted past 200000 miles. But yesterday it would not start. The day prior it was running fine. I checked the fuel pump its working fine. I smell fuel. It is getting spark from the distributor. Why would it run fine one day and not start the next? The check engine light has been on for a while. Ive checked all connectors and everything is hooked up. Any clues?

Thursday, April 10th, 2008 AT 7:59 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Pull the code/s from the computer and comeback with it. Also do below-

Get a carb cleaner and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel problem, check the fuel pressure to rule out the fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light.

Fuel pump and Injector/s checks out-start checking the ignition system-power to coil, coil/s itself, distributor pick-up, control module, Cam and Crankshaft sensors.

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time

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Friday, April 11th, 2008 AT 1:47 AM