Uhm, white smoke blowby? Hows your coolant doing? Is your oil pressure higher then normal? What does your oil look like?

 

Well kinda like white smoke or fog, roadranger my isn't quite that bad. thanks for info on intercooler

 

My Detroit 60 does the same thing once in a while. Mine looks like fog or steam and not a darker smoke color.

 

My coolant is fine although I noticed I have a leak around the bottom of radiator around the neck, oil pressure is fine also my oil look fine. Will get my oil changed Monday and check on leak on radiator and have my intercooler check. Thanks

 

Check the rubber hose from the compressor to the intake. I should be blue if it is a factory hose. This hose is pressurized by the intake to help the compressor build air faster.

If a hole comes in this hose, which usually happens on the lower back side, you will lose a lot of air charge to the engine. This results in low horsepower and torque, and decreased fuel mileage.

This is very easy to check and replace.

 

I agree with the compressor inlet hose theory for the power concern. The crankcase blow-by is measurable, take it to a competent service facility and have them do a blow-by test with a manometer.

 

Roadranger S60 Detroits are not suppose to go below 1050rpms per engine owners manual. Sounds like you are trying to drive the DD like a Cat. Detroits like 1400/1500 and up to 1700 for a shift point. But if you shift at 1500 you will get better fuel milage.

I have a 430 hp DD pulling 49,000lbs I get 8.475mpg @ 57 mph IH 9200 3:90

 

Thanks, didn't know the compressor got it's air from after the turbo. :shock:

 

I do miss my 3406E Cat :sad: ! If I was to shift this crappy DD whole gears at 1500 I'd bog out! :shock: ! I have to go to 1700 for whole gears and 1600 for splits to keep it from loosing power after the upshift. Another truck we have has a 470hp DD that doesn't have any problem developing torque down at 1100. Without the 13 speed this truck would be almost undriveable. To bad, it is a 2000 Intl Eagle 70" sleeper but has had many problems, some fixed and some still there. Just had the kingpins done. Really needs a overhaul to get rid of the blowby, a new steering box, a new seat, fix the incredibly loud wind whistles on it (can't run with the windows down :shock: ), and it is still too big for the city deliveries we do (rarely run overnight) . If it wasn't so F'd up we'd sell it. Well, I've got to spoon some new drives on the truck we just registered tomorrow - a 1995 FLD120 41" sleeper with 11.1 liter DD 325/350 9-speed that seems to pull better than the 430/500 hp DD in the Intl :shock: .

 

I was in a truck stop this weekend talking to a guy with a Detroit Series 60 and he showed me his truck and he had a hose connected to the blow-by pipe under the engine and went into the exhaust stack.

Is this normal and OK to do this?