crappy fuel mpg
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Junior User
Joined: Jul 2007
Posts: 84
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crappy fuel mpg
02.... 4x4... longbed... 150k... auto... so my tires are aired up... 6637.. 4 inch turbo back... edge on econnomy setting and fixed up pipes... about 900 bones later and im still getting ****ty milage 11.5 mpg.... most of the time its kept under 2k and is driven 70 on highway and 30 town... this sux... we dont use winter blend... wtf!!! im sick and tired of this... this is not the reason i bought a diesel ''crappy milage'' i had a 5.4 before..and needed better milage.... also the drain tube from the fuel bowl leaks.... i put a bottle under it to see if thats the only spot its leaking...it still leaks.... leaking from back of the motor on the passenger side... dripping off starter????
Freshman User
Joined: Jan 2006
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If fixing the fuel bowl drain doesn't stop the leak then check,the fuel return line that runs from the water seperator thru the engine valley, to the back side of the head on the passenger side. There is a clamp that holds this line and often the coating has rubbed off and worn a hole in the lone, also the fitting on the back of the head can work it self loose and either way you can loose fuel, fix it and you'll see mileage go up, don't fix it and it will strand you on the side of the road with a huge fuel spill to try and clean up. Get rid of the buckets and fix the leak first. Diesel does burn and you're leaking on hot exhaust pipes, plus coating everybodys paint jobs and windshields as you go down the road getting crappy fuel mileage.
Senior User
Joined: Feb 2002
Posts: 323
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From: Valley Center, Kansas
Makohon,
Go to this web site and get your orings, great guy and fast service.
http://home.centurytel.net/sabre/drainvalve.html
Doc.
Go to this web site and get your orings, great guy and fast service.
http://home.centurytel.net/sabre/drainvalve.html
Doc.
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
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From: Charlotte-Fairbanks-Bflo
Get all of your leaks fixed then take a several hundred mile trip, no heavy foot at all and stay at 1750-1800 rpm and then do a hand calculated mpg check. Take the extra 10 minutes to make sure it is completely full before and after.
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Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
Mark brings up a good point -- is this hand calculated? I just got 15.5, the tank before I got 18.25 driving like described above. Honestly, I wish I could drive like I wanted and still get 18.25, but I can't. I like to play, so I pay (at the rate of ~3 MPG).
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Hotshot
Joined: Dec 2006
Posts: 14,069
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From: Melbourne, Ky
My 02 4X4 crew cab get between 15 and 15.5mpg around town and 19 on long trips. I've done the 6637 filter and recently installed a 4" turbo back exhaust. Haven't checked the mileage since installing the exhaust. I bet when you get the leaks fixed, you will notice a big increase in your mileage. Diving into the "valley of he!!" to fix them is no fun, but the more you get in there, the easier it is. Let us know what you find.
Gone, but not forgotten
Joined: Oct 2005
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From: Charlotte-Fairbanks-Bflo
Originally Posted by Izzy351
Mark brings up a good point -- is this hand calculated? I just got 15.5, the tank before I got 18.25 driving like described above. Honestly, I wish I could drive like I wanted and still get 18.25, but I can't. I like to play, so I pay (at the rate of ~3 MPG).
Gone, but not forgotten
Joined: Oct 2005
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From: Charlotte-Fairbanks-Bflo
Originally Posted by 1996pwrstrk
One thing that always helps my milage is keeping the windows up . That way I'm not romping on it just to hear it .
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Originally Posted by makohon
02.... 4x4... longbed... 150k... auto... so my tires are aired up... 6637.. 4 inch turbo back... edge on econnomy setting and fixed up pipes... about 900 bones later and im still getting ****ty milage 11.5 mpg.... most of the time its kept under 2k and is driven 70 on highway and 30 town... this sux... we dont use winter blend... wtf!!! im sick and tired of this... this is not the reason i bought a diesel ''crappy milage'' i had a 5.4 before..and needed better milage.... also the drain tube from the fuel bowl leaks.... i put a bottle under it to see if thats the only spot its leaking...it still leaks.... leaking from back of the motor on the passenger side... dripping off starter????
Good luck with the leaks, I also fixed a couple leaks on my truck. PITA to say the least, but they can be found and repaired.
Junior User
Joined: Aug 2000
Posts: 68
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From: Texas
Definately fix the fual leak! Who knows how much you are losing there...
Another simple thing that helped my mileage was the Zoodad mod. But also when I did it, I found the the rubber shield in that area was partially blocking my intake opening! To check that out, pop the hood and raise the rubber cover in front of the radiator on the driver's side and look at the intake opening. Found the same issue on my neighbor's '05 as well. Just tuck it out of the way or cut it off.
Darren
Another simple thing that helped my mileage was the Zoodad mod. But also when I did it, I found the the rubber shield in that area was partially blocking my intake opening! To check that out, pop the hood and raise the rubber cover in front of the radiator on the driver's side and look at the intake opening. Found the same issue on my neighbor's '05 as well. Just tuck it out of the way or cut it off.
Darren
Lead Driver
Joined: Jun 2007
Posts: 7,760
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From: Hampton, Maryland.
What size tires are you running also. If they are larger than stock, you will see an apparent drop in mileage because the truck is actually traveling a good bit further than what your odometer reads.