Ford V-10 MPG getting worse, dirty MAF?
My 2004 Ford V-10 has MPG dropping since 2006. As my engine was getting broken in, you'd think the MPG would go up slightly, mine dropped. Not sure about the corelation, but that's about the time I ch...
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If it were mine I'd be sure the MAF sensor was clean. I'd scan it to see if there are any codes present. And I'd be alert for any misfires (rough idle, misfire on acceleration etc.) The ECM is a bit slow to report misfires.
But I'm more in the camp that you had some lucky breaks early in the life of the unit such as tailwinds. Also you probably did pick up some weight along the way. You also may have sped up a bit as you became more comfortable with driving the motorhome. Your current mileage isn't that far from the norm particularly in hilly terrain or windy conditions.
Tires inflated to proper pressure, go through it and weed out unnecessary weight, avoid headwind conditions when possible, spec oil (not needlessly heavy), and drive as close to 55 mph as you can stand.
But I'm more in the camp that you had some lucky breaks early in the life of the unit such as tailwinds. Also you probably did pick up some weight along the way. You also may have sped up a bit as you became more comfortable with driving the motorhome. Your current mileage isn't that far from the norm particularly in hilly terrain or windy conditions.
Tires inflated to proper pressure, go through it and weed out unnecessary weight, avoid headwind conditions when possible, spec oil (not needlessly heavy), and drive as close to 55 mph as you can stand.
