The Ford Barn - View Single Post - backfire

RawhideKid · 08-10-2017, 11:35 AM

STOP!! First thing, which ignition switch do you have? IF you have a replacement switch, pull the 4 screws from the dash and make sure that all the attachment screws on the switch are tight. How large a gathering of keys hanging off your ignition key ring? Lighten the load. While you have the dash off, check the area behind where the switch is and place a couple of pieces of electrical tape on the tank.

Second, remove the half wingnuts from the terminal box and check for loose connections. If you have an aftermarket terminal box, I strongly recommend removing it from the firewall, tighten the nuts with a bit of blue locktite, and place a spot of your favorite silicone caulking in the screw holes on the back to keep them from loosening up and touching the firewall.

Since the car mostly runs fine, this is an intermittent problem, so it will probably not be the points or condenser, but possibly the wire between the upper and lower plate in the distributor.

These are the common "intermittent" problem areas.

08-10-2017, 11:35 AM	#8
RawhideKid BANNED Join Date: Apr 2017 Location: Lower Left Coast Posts: 469	Re: backfire - HELP! STOP!! First thing, which ignition switch do you have? IF you have a replacement switch, pull the 4 screws from the dash and make sure that all the attachment screws on the switch are tight. How large a gathering of keys hanging off your ignition key ring? Lighten the load. While you have the dash off, check the area behind where the switch is and place a couple of pieces of electrical tape on the tank. Second, remove the half wingnuts from the terminal box and check for loose connections. If you have an aftermarket terminal box, I strongly recommend removing it from the firewall, tighten the nuts with a bit of blue locktite, and place a spot of your favorite silicone caulking in the screw holes on the back to keep them from loosening up and touching the firewall. Since the car mostly runs fine, this is an intermittent problem, so it will probably not be the points or condenser, but possibly the wire between the upper and lower plate in the distributor. These are the common "intermittent" problem areas.