How to make an emission engine run more reliable

They look better painted hooker red too.

 

I think there’s some soot build up in the “head”.

 

All though I will never proclaim to know everything about women I have been happily married for 33 years so I might know just a little bit about women.
As far as engines go I have 40 years experience as a mechanic with 30 years of that as an owner of a mechanical repair shop.
I am ASE certified in both Engines and Transmissions and also computer electronics.
Along with the mechanical repair business and tow business I am also an independent owner operator with my own authority.
These are some of my credentials.
I look forward to you stating yours.
And by the way your original post is utter nonsense.

 

You put 8000 hours on a truck in 10 months? There’s on a little over 7000 hours in 10 months, then there’s the fact that you haven’t driven in almost 20 years so absolutely nothing about the trucks you supposedly drove applies here.

 

I can’t ever remember any older truck getting 7/8 mpg.

 

My 97, 12.7 would get 7 and even 8 depending on wind loads, maxed out on weight. A big wind would kill the mileage sometimes though.

I am thinking by old, you are talking new enough to be electronic, but pre egr and emissions.
I will say there might be something to what you are saying. My trucks are 99 and earlier, so do not run as hot as newer ones. Thinner fuel does get less mileage, proven by anyone who burns # 1 in winter, instead of 2, and some cat powered trucks at least had fuel coolers on them because of the hot fuel returning.

Now on the other hand, I have had thermostats stick open and could not get the engine heat over 140 or so without lugging or running a couple of pounds on the retarder and mileage would go straight down the tubes.

 

Define "older" JD. I had a '99 FLD, 12.7 series 60, 500HP would get 7.5-8.5. Now granted all it did was pull a van.

But I'm not sure that would actually classify as "older".

 

Pulling 80,000 regularly?

 

Yep. Running the eastern half of the US and Canada. Lots of I81 up into the NE, paper rolls out of ME, magnesium ingots out of PA, almost always heavy. Occasionally would get light bulbs out of Queens, only thing I remember that was light.

Of course we're talking pre ULSD too, I'm not sure how much a difference that makes but probably a contributing factor.

Only ride I ever had that was comparable fuel wise was an '06 Columbia that had a C15 Acert at 425hp. But it was pulling really light loads on flat land.