Engine is missing - '03 Expedition
When I bought this beast March 3rd, I knew it had spark plug (or something) issue. Figured it was small. I did take it to my guy, Pat. There was no Check Engine light on the dash, so he diagnosed it one cylinder at a time and found the coil was bad on the passenger side - furthest one back, of course ! But yesterday I took it thru the car wash and the engine really got worse. I filled the gas tank to the top and have added Sea Foam additive. I hope that works, but now the Service Engine Soon light is on. What's with these Triton engine with the spark plugs on the top !?!?