The gap on the plugs might not be gapped properly.
The spark plugs?æon a 1999 Dodge Durango are at the side of the engine. Make sure that the engine is cool before accessing the spark plugs.
16 Plugs, each coil 2 plugs
40
4.7L has 8 spark plugs. 5.7L has 16 spark plugs.
They are on both sides and the back of the block.
8
88
champion plugs every 30 thousand miles
16mm or 5/8 inch
show me a picture of the spark plug wires on a durango from the spark plugs to the cap
Only if there's something wrong with your old spark plugs.
As the plugs wear, the gap increases and the spark fades, resulting it poor ignition eventually. This simply means reduced gas mileage. I have 60000 miles on my stock plugs with no reduction in gas mileage, but I plan on changing them real soon...