I have a 1997 f250 and engine starts and idles fine but when given gas it starts to knock and check engine light comes on and when it comes back to a idle it has a knock now and check engine light comes off
Please help I have no clue what to look for
Yesterday I replaced the fuel filter on 1993 F350 7.3 non-turbo.
Today, I was going about 65mph when i heard a loud knock develop in the motor.
The truck now idles very rough too.
Considering I went to town to top off the fuel, could that be a factor?
In reading on here, I...