‘91 F53 No Spark

[Joe Rambler]

First time posting, I hope this gets to someone who knows old Fords.
I’m working on a ‘92 Southwind built on a Ford F53 7.3L (460). It ran fine last year, used mainly during football season. It’s been in storage through spring & summer. Son-in-law says he started it every month but getting ready to travel a couple months ago, it wouldn’t start. He replaced the old weak/dead batteries. Still won’t start. It’s getting fuel, no spark. Replaced original coil, cap & rotor, plugs & wires. Still cranks fine, insufficient spark from the magneto. Found a stray red wire in one of the black corrugated protective sleeves in the battery compartment with a female connector but haven’t been able to find a stray male tab that it goes to.

So, I have a few questions.
Why is it not getting enough spark from the magneto?
Any idea what this stray wire is or where it goes?
If I can get a mobile mechanic out to the RV storage farm, does anyone know for sure where to plug into the EEC?

Any helpful feedback will be vey much appreciated.

 

[House Husband]

I believe your OBD1 port is close to the drivers side of the radiator, under hood.
You do not have a magneto, it's a distributor.
The red wire is probably the wire that should help the computer maintain it's memory. Fleetwood was famous for leaving that wire unconnected from the engine battery. Will not cause a no start problem.
Do you have fuel pressure? If not, there is a 30 amp fuse under the hood that supplies voltage to the ignition and fuel pump.
You could have a bad coil wire, distributor, TFI, EEC, etc.
At the age of you MH, you could have a electrolytic capacitor bad in the EEC. I just went through that.
You'll probably need a professional to trouble shoot the problem.

Richard
95 Bounder F53

 

[Joe Rambler]

Thanks Richard!