You probably need new plugs and plug wires. DO NOT set the gap on the plugs or you'll ruin them.
why 2003 ford focus stall when air conditioner is turned on
The 2003 Ford Focus has 16 valves.
The 2003 Ford Focus is a gas-powered vehicle.
The 2003 Ford Focus has a 5-speed manual.
The 2003 Ford Focus has an inline 4 engine.
The 2003 Ford Focus runs on regular unleaded.
The 2003 Ford Focus is 14 ft. 0.1 in. (168.1 in.) long.
The height of the 2003 Ford Focus is 4 ft. 8.3 in. (56.3 in.).
The 2003 Ford Focus has double overhead cam (DOHC).
The curb weight of the 2003 Ford Focus is 2598 lbs..
The 2003 Ford Focus's turning circle is 34.3 ft..
I replace engine but now it wont start.