Hey y’all, new guy here. '66 Mustang—289: I Had a mechanic install a new PerTronix distributor and coil, wires and plugs. Since I’ve gotten it back, there is a periodic momentary stumble, but the rest of the time it runs fine. It usually happens when it's warmed up, in gear, at idle, such as at a stop light. It will act like it’s going to die, then recover and just continue running as normal. A couple of times it has actually died, but then starts right back up. I’ve checked the fuel filter and carb filter—- seems to be getting fuel okay. I’ve checked all the wires, including the wire to the ignition switch and the battery cables, and everything is tight. Any advice? What am I missing? I appreciate your reading this.
PerTronix Flamethrower III distributor and coil
NGK Iridium plugs
PerTronix Flamethrower III distributor and coil
NGK Iridium plugs