No Spark

demon91887 · 11-08-2009, 04:51 AM

ok i just recently bought a 79 hatch 5.0. when i bought it i knew it had problems with getting fuel to motor so dropped tank flushed out blew lines then ran a while but eventually killed bc so much rust in tank it reclogged the lines. so pushed home and dropped tank again. i brought the tank to a radiator shop and got them to boil it out and recondition it. got home and put back on. now that it was clean filled up tank and would crank but just wouldnt start..... so did complete full tune up. new wires, plugs, rotor, distributer, distribuer cap and coil. still nothing. checked fuel lines at motor and has plenty. so pulled out spark plug and tried cranking to see if had spark and had none. so i pulled coil wire put screw driver held 1/4 off motor to see if had spark and nothing. borrowed a friends test lite and have does power to both sides of coil. didnt bother checking ignition fuse bc i would assume since it is trying to crank it wouldnt be that. so if anyone knows anything i would really appreciate the help

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hiboostwoody · 11-08-2009, 05:40 AM

If you have power to both sides of the coil but no spark out of the coil, it has to be a bad coil.

demon91887 · 11-09-2009, 03:09 AM

yeah but i have put a brand new coil in before it ran out of gas and cleaned the tank which might have been a couple weeks ago then after that i put a coil in from out of another car that was running with it in. to the point of was running killed took off put on my car and still nothing

chronos · 11-09-2009, 10:38 PM

I don't know much about Ford ignition systems in your model year, but I'll throw out a couple of ideas. On Dodges it's called the Crank Positioning Sensor and when that goes out you get no spark. It's a separate device from the coil. In the older GM cars it was a module at the base of the distributer that would also control the spark. Don't remember what that was called, but when it went bad, you got no spark. Try and figure out what Ford has that would do the same thing and check that out.