Mechanics

WONT START WHEN HOT

2000 Mazda Protege

Electrical problem
2000 Mazda Protege 4 cyl Front Wheel Drive Automatic 58000 miles

My 2000 Mazda portage wont start after about 30 minutes of being started. We had all the wires changed out, the starter and a turn up. It starts very well when cold. It seems that intermittently it wont start when hot. The sound we get is like it has no juice to turn engine over. They tested the alt and the battery and it was perfect.

My wife drives the car and she lets it sit for about 30 minutes and the car starts right up.

Does anyone have any ideas?
Thanks
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Mike6457
May 2, 2008.



Next time it refuses to start do below one of this is gonna be missing fuel or spark

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

Rasmataz
May 2, 2008.