MustangWorks.com : Ford Forums - View Single Post - No spark=Engine not running..How can I tell if I got spark???

PKRWUD · 10-23-2001, 01:24 PM

Have him try and start it. After 10 seconds of cranking it over, have him pull a spark plug and see if it's wet. If it's dry, it's a fuel problem. If it's wet, he needs to verify spark. While the plug is out, attach it to the plug wire and rest it on the intake. Crank it over and look for a spark. If there's a spark, he needs to verify the ignition timing by setting it at TDC after the compression stroke, and verify the rotor position. If there's no spark, he needs to verify the coil is working. This can be done the same way he checks to see if the plug is firing (attach a plug to the coil wire, and ground it by resting it on the intake). If the coil is working, he needs to inspect the cap and rotor for damage. If the coil is not firing, he needs to check the TFI module. The easiest method is to replace it with a known good module.

Replace parts as deemed defective.

Take care,
-Chris

------------------
Retired Moderator
MustangNet

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10-23-2001, 01:24 PM	#10
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Have him try and start it. After 10 seconds of cranking it over, have him pull a spark plug and see if it's wet. If it's dry, it's a fuel problem. If it's wet, he needs to verify spark. While the plug is out, attach it to the plug wire and rest it on the intake. Crank it over and look for a spark. If there's a spark, he needs to verify the ignition timing by setting it at TDC after the compression stroke, and verify the rotor position. If there's no spark, he needs to verify the coil is working. This can be done the same way he checks to see if the plug is firing (attach a plug to the coil wire, and ground it by resting it on the intake). If the coil is working, he needs to inspect the cap and rotor for damage. If the coil is not firing, he needs to check the TFI module. The easiest method is to replace it with a known good module. Replace parts as deemed defective. Take care, -Chris ------------------ Retired Moderator MustangNet My site: Peckerwoods Pit Stop My teams site: Jim Porter Racing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN.