runs really rough. I know what the codes mean. just don't know the cause. I've got spark off each coil. Checked by using old plug and wire. Plug had arc when I turned motor over.
Hi there,
The P0300 codes indicate misfires on cylinders 1, 3, and 7. Here is a list of possible causes for you.
P0307 FORD - Cylinder 7 Misfire Detected Read more: https://www.autocodes.com/p0307_ford.html
The P0171 indicates the air/fuel mix is too lean. Here is a list of possible causes.
P0171 FORD - Fuel Injection System Too Lean Bank 1 Read more: https://www.autocodes.com/p0171_ford.html
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