1979 Ford Bronco No Spark To Engine?
Ignition coil, ignition module, distributor, all replaced, and a new battery… Still nothing… Any ideas?
Does is have an ignition module? If yes then it may be that.
Could be a bad starter relay circuit which is where the coil gets power.Test for correct power to the ignition coil from the starter relay wiring… Red-green wire at coil splices to brown wire at relay and also to red-green wire going to ignition switch… And also check the wiring from the module to distributor for loose terminals loose connector, corrosion, etc.
Wiring diagrams…
Main page for other diagrams…
http://www.fordification.net/tech/wiring.htm
Nothing obvious. Is the cam shaft turning? If not, bad timing belt/chain. Is the distributor shaft turning? If not, the oil pump is probably locked up and shearing the roll pin that holds the gear to the distributor shaft. You need to check if you are getting pulsating 12V to the coil. If not, it is the ignition module or the 12V going to the ignition module or wire going to the coil. Are you getting a spark from the coil? If not, the coil is bad. Are you getting a spark from the spark plug wire connectors on the distributor cap? If not, the cap or rotor is bad. Are you getting a spark to the plugs? If not, the spark plug wires are not installed or bad.
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