94 f350 no spark!

[rangerdanger208]

so it just randomly decides it doesn't want to start. this happens like once a week but normally it will start after a while. i have no spark coming from the coil. is it a bad coil or is the problem deeper?

when it happened in the past it will attempt to fire then lose spark. it turns over and over then just randomly fires. please help! i am stuck here till i figure this thing out

 

[adsm08]

Bad tfi.

Postin' from teh Galaxy

 

[rangerdanger208]

OK guys having this issue still! And this truck has a 460 out of an older truck and there is no tfi? My truck would not start for hours so I had to walk my ass home any ideas? I changed relays and coil and still have no spark coming off coil

 

[Andy D]

This has a can coil? Hot wire the coil with 12v straight from the battery. I'm not familiar with the 350 do they have a fusable link? Before you do this find out which side of the coil is the hot side. They are numbered. Good luck.