Injector leak down test doesnt work.

[dhirocz]

Fair enough.

Im going to continue to pick up random parts (turbo oil and coolant hoses, oil pump, fuel pump, ECM, head bolts, etc) just in case. Ive already got a parts stock of ISX parts on standby. Theyll need to be used eventually anyway at my mileage. Ill also keep driving it nicely like I have been. Hoping it hangs in there until fall when its cooler out to tear it down. Ill keep in mind that its not carbon packed when I wonder why it sounds like a locomotive lol.

Wish I could buy a piston and liner kit and a head ahead of time just to have it on hand, but I know that's not necessarily the best way to go.

What bothers me is that it prefers that I drive faster, rather than slower. I did two loads this past week from savannah to Pensacola, empty one way, back at 95k the other. I got better mileage at 65 then at 58 by a noticeable margin. Normally, these iso tanks being flat faced and set back from the cab like they are, I do much better going slower because of the aerodynamic penalty, but lately, thats not the case.

I used to get 8 mpg loaded at 60 at 80k, 11-12 unloaded, 17+ bobtail. Mileage has slipped 2-3 mpg, all things being equal.