I had a local shop that only works on motor issues do an inframe rebuild on my truck. They say they are authorized by a doz. Different Manufacturers
They rebuilt my 1999 12.7 60 series inframe.
And when I received it back I drove it less than 600 miles. With Oil coming out of exhaust Manifold and driping on ground and some oil in fuel.
They took it back in shop, made some observations and told me nothing is wrong, a leak like this is not uncommon on breakin period.
My Question; Could their response be valid
Oil in Exhaust manifold After inframe done on 60 series
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Reymann, Mar 14, 2020.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
Nope, they're trying to weasel their way out of re-work.
jamespmack Thanks this. -
Yes, it does happen sometimes. It's most likely fuel slobber and mixing with the black spot. Looks like oil. Try not to let it idle and run it hard a few days to break in. It should stop.
-
Oil in fuel? Or fuel in oil?
jamespmack Thanks this. -
jamespmack Thanks this.
-
If its oil yes. But more likely to be fuel mixing with black soot. Ive seen it drip. It will happen with idling in cold temps/cold cylinder temps too on a good motor. Rpm needs bumped up when idling or shut off.AModelCat Thanks this. -
The leak was coming out of area where exhaust Manifold connected to flexible metal exhaust pipe prior to muffler. My primary fuel filter was dark to the levelof fuel and my back flo fuel valve was black. And what I thought was oil was covering my new oil filters.
Is there a way I can discern oil in fuel vs soot mentioned? -
Smell usually. Sooty diesel still smells like diesel. Sooty diesel is usually thinner than soot oil too.
-
Thanks everybody for your observations.
-
My last Truck did that after an Overhaul.Same engine. It Slobbered oil from the exhaust side of turbo, even blew some out of the right side stack. Took it back, they said it was normal, till the rings sealed up. Sure enough, it went away after a few thousand miles running. Current Truck, same engine.Just Overhauled, didn’t do it.Mechanic and I both expected it might, but not at all. Maybe the black fuel in your filters is from old fuel contaminated from combustion gases, from old injector cups leaking. Just a thought. Oil slobber should go away within a few thousand anyway. Just depends on rings sealing up.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.