The Check Engine Light may illuminate, the engine may run rough and have misfires on acceleration. Commonly the ignition coils and/or the ignition coil boots are the cause of this problem. The rubber boot that insulates the coil to the spark plug can dry and crack allowing arcing. Inspect the coils and boots, and replace them as needed. Our technicians also recommend replacing the coil boots any time the spark plugs are replaced.
Car Problem Reports
Ford E-250 Rough Running Engine and Possible Check Engine Light
Ford E-250 Problem
Electrical & Lights Affected: 4.6L V8, 5.4L V8, 6.8L V10
Average Mileage: 140,666 mi (70,000 mi - 252,000 mi)
Visitor, 2002 Ford E-250, 252,000 mi
I change plugs ignition boots and still loos power wheen Isteep on the gas pedal