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Big Dog
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Posts posted by Moparmike

  1. Yes I understand that that's why I said I may be  asking a bite much out of it but on a different note I also have a freightliner with a 280 Cummins 9speed 68000 gets 6.5 no problem at all.... but I believe I got more when I first got the mack just can't remember I usually keep up with this stuff to check back on ..I've talked with mack about a little bump in power they say if mack approves of it I think it was like 179.00 to hook it up..but for the most part I'm loving the truck looking at 1 more 2000 now..

  2. Ok guys I think I should be getting better mileage then I am ..run down 

    E7 300hp

    6speed auto

    Quad axle dump truck 

    Tagged at 71000

    Run 68000 most times filled up 90gal had to refill after 450 miles 5mpg 90 gals..

    My other truck rd690 e7 400hp 8ll

    Gets 6miles to gal.and empty its 3000 lbs more the the 688s..am I asking for to much with the little hp..new air filter going to change fuel this weekend ..going to get valves sets check fuel pressure anything you guys can help with ..thanks..

  3. Driving the dump truck today out the blue starts to smoke white smoke skipping running rough..tried the codes i get 6/6 fuel control module but if that was the case would the truck run at all..how can I check the injectors..it has the eup injectors as well as the others i guess is a good way to word it..

  4. Ok guys went had both my dumps rd688s and rd690 a.c. service 688s blows but not the best 690 does not blow cold at all..both was charged and checked by a shop so I'm thinking that the units are dirty and need cleaning from dust and whatever else..so my question is where do I start and what do I need to remove. To clean the evaporator coil..

  5. Ok guys new turbo here ..so a few questions before I try to start it up.took air cooler out cleaned it out oil line cleaned going to pour oil in turbo before I start it to ensure it's not dry..change oil and air filters along with oil..anything else I need to look for before starting it up..im sure it's going to smoke like crazy...

  6. Ok what's that not being funny I have no idea lol..also would this make the truck idle low burn a little more fuel them normally..my other Mack e7 400hp 8ll gets bout 6.5mpg this truck e7 300hp auto gets bout 5.5mpg and idles at 450 instead of the 650 the engine tag says ..450 is kinda rough 650 smooth..is there away to turn the idle up with hooking it up to the computer..thanks sorry for all the questions jyst looking to get this truck inline 

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