Mopar1973Man

Sender is most likely bad you might stop by a Cummins dealer and replace it.As for the excessive blow by you might check vacuum hoses for a leak. Leaking vacuum hose will make the vacuum pump into a air compressor for the engine hence blow by issues.

Check error codes it might give a clue to what's wrong. A lot of different wires will cause error codes if there are still unplugged.

1. Pick one station and one pump. Make sure you use the same station, pump and parked the same direction. 2. Fill up till the handle cancels on its own. Use the slowest notch for best accuracy. Do NOT top off! 3. 1st fill up don't change the display just go through the process but remember no adjustments! 4. Return back to the station after a 1/2 to 3/4 tank is burned. Same station, same pump, Same direction! 5. Fill the tank again same way. Slowest notch and let it cancel. Do NOT top off! 6. Now adjust for offset. 7. Your done. Like me when I do calibrations to my ScanGauge II I use Payette, ID Maverik station and pump #1. I pull it the same way each time and it I can hit the number dead on the nail each time. As soon as the handle cancels it right there. At the worse I've seen +/- 0.1 or 0.2... If still that close I leave it alone. Density change of fuel and temperature.

It the blind beauty of the VP44 pumps. So little information about then and more of a science experiment trying to gain as much MPG's as possible.

I just got back from Ontario, OR and Nampa, ID for a 240 mile round trip and still got 19.8 MPG using my heavy winter 265/75 R16's... But I'm so spoiled to having much high numbers.

Right from Quadzilla's lab techs...

Well if it was me in the quest of MPG's... [*]Ditch the 4.10 gear and swap for 3.55 gears. [*]Ditch the 35" tires and get back down to 235's [*]Ditch the 3' body lift and cut your wind drag down. [*]Ditch the 150HP sticks and drop down to +40 (RV275) to no more than +75HP You got way to much going against you to gain any kind of MPG's. Like for example for every 4 pounds of rotational mass you remove your required 1 less HP to keep rolling. So I can bet you got something like 120 pounds of weight in one tire/rim assembly. (attach pic) What you gain from the size for ratio you lost in weight of the tire. The more aggressive the tread pattern the more rolling resistance you have. Give you an idea the optimal tire for rolling resistance is a racing slick. Since its smooth face it has none. Then frontal area. that 3" body lift just place your truck even higher into the wind creating more drag. Oh rule of thumb if you want 20+ MPG you Pyrometer need to be below 600*F and the boost below 5 PSI. In the video below my boost is 1.5 to 3 PSI and pyrometer wondering between 450-600*F. Now that efficient. Here is a sample. http-~~-//www.youtube.com/watch?v=SRQdoPs_tLo

Ekkk... Low pressure. Your lowest pressure you want is 14 PSI. But 10 PSI is the service limit. But remember as the pressure fall below 14 the overflow valve starts closing and is completely closed by 10 PSI so cooling and lubing got limited. We'll see if the previous low pressure has any tell tales with error codes.

Error codes? When you say auto-accelerates do you mean all the way to red-line like someone mashed the throttle to the floor or is a jerky kind of up and down revving? I've got a hunch it might be a ECM problem but need more info. on it...

Well Lets say you need a goal to hit. I've been very capable of hold 21-22 MPG for the most part so for you that would be 1,100 Km to 1,200 km roughly speaking.So your getting a new fuel system that a good start. But I rather concerned with the condition of the VP44. I think you might be fighting a losing battle against a pup that might be totally wore out. This why I'm asking about the fuel pressure and the error codes because it might give a clue to what is wrong. Do you see any white smoke at start up? (digging for more info)

Lazy day...:whistle:But here I am back at the helm steering this site down the information super-highway...

More information about the truck is needed for sure. Mods, any kind of work, mileage, etc. 450 km = 279 miles or roughly 9.3 MPG figuring against 30 gallons of fuel. Ouch... So I need to know what is your fuel pressure and if there is any error codes present? (Yes. Error codes can be present without a check engine light)

Fuel pressure?

Actually they do. I know of several people on the fire crews with long or even longer hair than mine. Even funnier yet my commander was nicknamed "Ponytail Pete" he has a long ponytail but his hair is absolutely white. Local guy and been working with USFS for years!

Rogan from another stand-point. I use to do the computer tech support and computer building till about 08 or 09 when the fuel price took off through the roof. I was losing more money on warranty work and support calls. So I finally dropped away from the computer tech work and switch over to automotive work and web site management because in either case the work came to me and I could work from home then. This sliced off a huge expense and put it back in my pocket. My last conversation just a few days with CajFlynn he said he's really busy. You might try contacting him and see what he's got to say. Lot's of long hours of driving and large expensive boats going cross country.

I'm not quitting yet... Full speed ahead!

As I wrote to Rogan in his Vistor panel...

Hey gang... You guys on the coast hanging one from rattling. Please be smart and stay under cover and be safe! But after its all said and done please contact other family members here for assistance. I'm sure that there is helping hands here willing to help out. So please don't think you alone we are all behind you guys!Be safe!

Hey gang... You guys on the coast fighting back the weather. Please be smart and stay under cover and be safe! But after its all said and done please contact other family members here for assistance. I'm sure that there is helping hands here willing to help out. So please don't think you alone we are all behind you guys!Be safe!

I didn't help matters... Mrtowman4u is another that does towing of sorts... Blueox01 he's another high miled truck that tows different things...

Hmmm... Those are cool how the flame burns and dances on the smoke vapors.

5 or 6 speeds are nearly the same for ratios.5 speeds have 4th and 5th close. Then 6 speeds have 4th, 5th, and 6th close. 5 Speed in 4th is 1:1 ratio5 Speed in 5th is 0.75:1 ratio6 Speed in 5th is 1:1 ratio6 Speed in 6th is 0.73:1 ratio

Where are you at maybe one of the family here can meet you and help you fix your problem.

Front shaft is all one number. (3 joints all the same)Rear shaft is all another number. (3 joints all the same)

Heck I'm still on the ball tonight I'm plugging in the 3rd Gen error code diagnostics as we speak. Even on my birthday... http://articles.mopar1973man.com/3rd-generation-dodge-cummins/60-obdii-error-codes @CSM Well we might not have oil or gas here but the gold mines are running big time.