Mechanics

CAR NOT STARTING

1987 Porsche 924 • 4 cylinder 2WD Manual • 147,000 miles

87 porsche924 starts then will not start after turning off. Usually will start again after some time. Also stalls when at idle. New fuel pump & relay installed but problem still persists? Sometimes will not start when sitting overnight?
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Steven61
March 18, 2011.



Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its 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, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-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

Rasmataz
Mar 18, 2011.