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FedEx Discussions
Mercedes 4.7 & Cummins 6.7
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<blockquote data-quote="bacha29" data-source="post: 2641294" data-attributes="member: 58386"><p>The trouble with those little engines is that while they might be easier on fuel they have to work so hard to make power especially if you deliver on a hilly terrain. The 6.7 Cummins is rated as high as 385hp depending on how they are set up. And as Tim " the tool man Taylor" always said...." more power" well you got it with that 6.7. You do have to use DEF and the tappets have to be adjusted at 150,000 and there will probably come a time when you have to replace injectors and if it were to happen.....DO NOT USE REMANUFACTURED INJECTORS. It's a costly lesson I had to learn the hard way on my 5.9 which was about the only thing I had to do to it and it had 350,000 on it when I sold the unit 2 years ago and it's still out there every day.</p></blockquote><p></p>
[QUOTE="bacha29, post: 2641294, member: 58386"] The trouble with those little engines is that while they might be easier on fuel they have to work so hard to make power especially if you deliver on a hilly terrain. The 6.7 Cummins is rated as high as 385hp depending on how they are set up. And as Tim " the tool man Taylor" always said...." more power" well you got it with that 6.7. You do have to use DEF and the tappets have to be adjusted at 150,000 and there will probably come a time when you have to replace injectors and if it were to happen.....DO NOT USE REMANUFACTURED INJECTORS. It's a costly lesson I had to learn the hard way on my 5.9 which was about the only thing I had to do to it and it had 350,000 on it when I sold the unit 2 years ago and it's still out there every day. [/QUOTE]
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