8.7mpg
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by El Gato
Kwik, are you not running steep gears even though they are stock? I can believe anyone getting over 20 MPG unless they are driving between 1500-2000 RPMs... Just my 2 cents.
Elder User
Joined: Sep 2004
Posts: 780
Likes: 1
From: Chicago suburbs
Originally Posted by BowDown
Believe I'm repeating myself 
. I have filled it up at ruffly the same amount on the fuel gauge, and it takes the same amount of fuel ruffly. I fill to the click, then round up to the next dollar. Every time. I take the gal on the receipt, and divide it into the trip odometer.
I know how to compute my milage.
. I have filled it up at ruffly the same amount on the fuel gauge, and it takes the same amount of fuel ruffly. I fill to the click, then round up to the next dollar. Every time. I take the gal on the receipt, and divide it into the trip odometer. I know how to compute my milage.
I also have every fill-up on a spreadsheet and have MPG for each fill-up and avg since new.
Postmaster
Joined: Nov 2003
Posts: 3,595
Likes: 0
From: Utah County, UT
Originally Posted by BowDown
Hmm... I will have to check to get an accurate number. I believe that when I'm doing 55 im at about 1800.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by empiretc
At 1900rpm I am running 65. I try not to go over that.
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Postmaster
Joined: Nov 2003
Posts: 3,595
Likes: 0
From: Utah County, UT
Originally Posted by empiretc
At 1900rpm I am running 65. I try not to go over that.
at every stop light in town are ya?
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Originally Posted by kawika
How are you calculatting the MPG? actual miles per gal? or the lie-o-meter on the console? When you fill up, do you see the fuel at the top of the filler neck, or stop on the first click of the pump? Don't ever believe the console, just the amount you fill up and actual mileage (after checking the accuracy of the odometer, with mile markers or GPS) I can fill 4 - 7 more gallons after the pump clicks off the first time.
Postmaster
Joined: Nov 2003
Posts: 3,595
Likes: 0
From: Utah County, UT
Okay, just go back from a little drive, recorded the following:
40mph - 1175 rpm
45mph - 1300 rpm
50mph - 1400 rpm
55mph - 1525 rpm
60mph - 1700 rpm
65mph - 1850 rpm
70mph - 2000 rpm
75mph - 2175 rpm
80mph - 2325 rpm
I am sure there is some variance from vehicle to vehicle. I have stock sized tires. My last fillup was on 3/20/06 yeilded 13.036mpg (459.4/35.24). Some highway miles, most of it 2 mile round trip to and from work.
40mph - 1175 rpm
45mph - 1300 rpm
50mph - 1400 rpm
55mph - 1525 rpm
60mph - 1700 rpm
65mph - 1850 rpm
70mph - 2000 rpm
75mph - 2175 rpm
80mph - 2325 rpm
I am sure there is some variance from vehicle to vehicle. I have stock sized tires. My last fillup was on 3/20/06 yeilded 13.036mpg (459.4/35.24). Some highway miles, most of it 2 mile round trip to and from work.
Elder User
Joined: Sep 2004
Posts: 851
Likes: 0
From: N. Georgia
It doesn't matter how he fills up his truck (stops when the pump kicks off or fills it to the neck) as long as he does it the same each and every time. Depending on how empty the tank is, the foam factor shouldn't make over 1/2 gal difference in the fill up. Yes, you can pack it on in, but if he is stopping in the same place everytime the mileage should be right.
Joe
Joe
Thread Starter
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Senior User
Joined: Feb 2006
Posts: 348
Likes: 0
From: Central, NY
Originally Posted by cangim
Well, now I am going to have to go for a spin tonight and log what RPM for What mileage. Bowdown, can you let us know what drive train you have? I am really curious to find out why you are getting such low mileage. Not doing burnouts at every stop light in town are ya?
at every stop light in town are ya?I rode the bike into work today.. so no new tests can be done till I get home.
Brisk 30deg ride in
.2000 Auto PSD Crew Cab Dually Shortbox
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Originally Posted by cangim
Okay, just go back from a little drive, recorded the following:
40mph - 1175 rpm
45mph - 1300 rpm
50mph - 1400 rpm
55mph - 1525 rpm
60mph - 1700 rpm
65mph - 1850 rpm
70mph - 2000 rpm
75mph - 2175 rpm
80mph - 2325 rpm
I am sure there is some variance from vehicle to vehicle. I have stock sized tires. My last fillup was on 3/20/06 yeilded 13.036mpg (459.4/35.24). Some highway miles, most of it 2 mile round trip to and from work.
40mph - 1175 rpm
45mph - 1300 rpm
50mph - 1400 rpm
55mph - 1525 rpm
60mph - 1700 rpm
65mph - 1850 rpm
70mph - 2000 rpm
75mph - 2175 rpm
80mph - 2325 rpm
I am sure there is some variance from vehicle to vehicle. I have stock sized tires. My last fillup was on 3/20/06 yeilded 13.036mpg (459.4/35.24). Some highway miles, most of it 2 mile round trip to and from work.
35 showing= 38.6 on gps
45 showing= 49.3 on gps
70 showing= 77.2 on gps
Even stock your truck should at least make you think you could spin the tires. If you are struggling to make power I would think that would kill your mileage.
I hope that the CPS does fix your problem, it would sorta surprise me. Could be a combo of several smaller things.
Tires- Stock and inflated
Boost- Some leaks possible
Fuel- No leaks noted
Turbo- Seems fine
EBPV- OK? (I had one stuck, lots of extra white smoke)
Speedo- OK
Odometer- Accurate
Trans.- Not Slipping
Driving Habits- Better than most
Fuel filter- Good
Air Filter- Good?
Exhaust smoke- No
CPS- Soon to be changed
I am sure I missed some,
Are you sure you station is really selling you a gallon of fuel? If you are using the same one, you might want to carry a 5 gal can with you the next time and check. Also, do you have any sticky fingers around that may be borrowing a can full o ut of your truck every now and then? Man, I hope you find your problem and get off that bike and back in your PSD.
I just became a senior
Thread Starter
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Senior User
Joined: Feb 2006
Posts: 348
Likes: 0
From: Central, NY
Well I have tried a different station this time around. Guess we can rule that out after this tank. Air filter was new (stock) for all tanks except this one. This one has the Kwik filter.