So I have been browsing threads about this motor's mileage capability. Figures as high as 30 MPGs.
I always had a feeling it could be done.
So my truck is an 83 1/2 ton 4x4. The front end sits higher than the back, nose to the wind, not sure if that's the stock stance.
It has wider and just slightly taller tires than the 215/85 r16's that were on it (Speedometer now reads close to right on, rather than a few MPH fast).
It's basically the stock truck.
I adjusted the IP (not knowing if the PO did or not) for more delivery, but I think I overdid it. I may have turned it 1/4 turn. The truck is naturally aspirated (No turbo)
Basically you cannot see the smoke during the day, but in the headlights at night, yeah, wow, nobody wants to be behind my truck because of the black smoke in their headlights.
So I took a trip to California (I am in AZ, a mile high elevation) at sea level. The truck runs good. It always has. But on a whim, I take a little out of the adjustment screw, not much, 1/16th turn. (Half an eighth turn or so, and maybe a little nudge on top of it)
No more smoke. At least not at sea level.
On the way back up to AZ, it is all uphill. Previously, I was driving the truck with the rich setting, at 70-75 MPH DOWNHILL from AZ to CA and got 20 MPGs out of it.
With just that little setting, I am now getting 26 MPGs going UPHILL. Granted, I am keeping it between 55 and 60 due to an oil issue. But I take careful notes on the odometer and gallons put into the tank down the the thousandth of the gallon some times (But usually only the hundredths, some times tenths).
SO, wow, yeah, that is a legit number, and going uphill.
I literally watched the fuel gauge *not* move, driving back up, when before I could glance at it periodically and watch it move from place to place.
With two tanks that means this truck has well over a thousand mile range.
It's too bad people give these motors a bad name, because they do rock.
Let it be said that I fiddled with the fuel delivery a few times before this, best I got was 23 MPGs.
I believe even on this magical setting, there's still a wee bit of smoke seen at mile high elevation.
I honestly wonder if new injectors would change anything, or if my mileage would go down... People seem to think their mileage gets "better" as the truck ages. I've seen it said several times.
But yeah, 26 MPGs out of a fullsize square body 4x4 pickup truck ain't bad, going uphill.
Forgot to add, I have the non EGR 1 ton intake I got from a cucv in a bone yard. That may have helped. But the intake literally takes air from the general engine area, there's no ram air whatsoever.
I always had a feeling it could be done.
So my truck is an 83 1/2 ton 4x4. The front end sits higher than the back, nose to the wind, not sure if that's the stock stance.
It has wider and just slightly taller tires than the 215/85 r16's that were on it (Speedometer now reads close to right on, rather than a few MPH fast).
It's basically the stock truck.
I adjusted the IP (not knowing if the PO did or not) for more delivery, but I think I overdid it. I may have turned it 1/4 turn. The truck is naturally aspirated (No turbo)
Basically you cannot see the smoke during the day, but in the headlights at night, yeah, wow, nobody wants to be behind my truck because of the black smoke in their headlights.
So I took a trip to California (I am in AZ, a mile high elevation) at sea level. The truck runs good. It always has. But on a whim, I take a little out of the adjustment screw, not much, 1/16th turn. (Half an eighth turn or so, and maybe a little nudge on top of it)
No more smoke. At least not at sea level.
On the way back up to AZ, it is all uphill. Previously, I was driving the truck with the rich setting, at 70-75 MPH DOWNHILL from AZ to CA and got 20 MPGs out of it.
With just that little setting, I am now getting 26 MPGs going UPHILL. Granted, I am keeping it between 55 and 60 due to an oil issue. But I take careful notes on the odometer and gallons put into the tank down the the thousandth of the gallon some times (But usually only the hundredths, some times tenths).
SO, wow, yeah, that is a legit number, and going uphill.
I literally watched the fuel gauge *not* move, driving back up, when before I could glance at it periodically and watch it move from place to place.
With two tanks that means this truck has well over a thousand mile range.
It's too bad people give these motors a bad name, because they do rock.
Let it be said that I fiddled with the fuel delivery a few times before this, best I got was 23 MPGs.
I believe even on this magical setting, there's still a wee bit of smoke seen at mile high elevation.
I honestly wonder if new injectors would change anything, or if my mileage would go down... People seem to think their mileage gets "better" as the truck ages. I've seen it said several times.
But yeah, 26 MPGs out of a fullsize square body 4x4 pickup truck ain't bad, going uphill.
Forgot to add, I have the non EGR 1 ton intake I got from a cucv in a bone yard. That may have helped. But the intake literally takes air from the general engine area, there's no ram air whatsoever.