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#1
01-12-2012, 04:19 PM
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Cummins MPG Question
The BTA5.9 (early '98 12-valve, 215hp/440 lbs./ft.) in my pickup is only getting is only getting a reliable 18mpg., both city and highway. Does anyone know if there is common "tune-up type" cause for this particular engine getting such crappy MPG--i.e., injector rebuild, valve lash too wide, etc.? Or a website where I can ask stoopid questions? Eddie 
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#2
01-13-2012, 01:41 AM
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Re: Cummins MPG Question
What tranny u got in that rig? If its a slushbox I'd be looking that direction... seems to be the weak link with the Chrysler products.
__________________
68 1100C 4x4 T-All http://www.binderplanet.com/forums/s...d.php?t=105580 79 Scout II 345/4spd Charlie Sheen 80 Traveller SD33T http://www.binderplanet.com/forums/s...ad.php?t=89172 96 F-250 Powerstroke Big Red
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#3
01-13-2012, 06:16 AM
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Re: Cummins MPG Question
Quote:
The Dodges I've heard of that got good mpg were running tranys with OD and axle ratios of 3.54 or less with 31" to 32" dia tires ie 235/85/R16 or 265/75/R16.
__________________
 You're as confused as a cow on AstroTurf. 
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#5
01-13-2012, 07:15 PM
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Re: Cummins MPG Question
Check for leaks in your air-to-air plumbing first then check your injectors and adjust the valves.
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#6
01-13-2012, 11:04 PM
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Re: Cummins MPG Question
Yea, yer mileage sucks. I got 20 in the pos Dog-de I had. O/D, 3.54 on slick 33's.
Oilburners.net or com, I forget which is one place to look and another cummins only site that I haven't found since my last computer crash are good places to look
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1972 Scout II
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#7
01-15-2012, 07:40 AM
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Re: Cummins MPG Question
How much boost are you getting?, EGT's? When's the last time you changed air filter?, fuel filter?
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1980 Scout Diesel, Cummins 4BTA Powered, 92 Dodge CAC, NV4500, 3.73 gears, Atlas 4.33, rolling on 33/10.50 BFG muds, modified H1C, Cold Air Intake
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#8
01-15-2012, 12:06 PM
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Re: Cummins MPG Question
Quote:
Another question is how much do you like the skinny pedal?
__________________
You're as confused as a cow on AstroTurf.
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#9
01-15-2012, 02:09 PM
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Re: Cummins MPG Question
 15" tires on a 3/4 diesel P/U?Did not realize Dodge made a 15" 8 lug
__________________
President Gulf Coast Binders 75 SII 304 4 speed 65 80 152 3 speed 77 SII 345 Automatic 75 SII NO engine or trans 74 3/4 ton Wagonmaster 392IC 4 speed 4x4 74 SII 196 4 speed 76 SII 196 4 speed 80 SII turbo diesel 4 speed
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| Tags |
| 265 , air , air filter , axle , chrysler , cummins , diesel , dog , engine , filter , fuel , fuel filter , pickup , question , rebuild , scout , size , sucks , tire , tires , tranny , valve , website , wide |
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