Quote:
Originally posted by MichiganMat
What a beast.
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No kidding. 16 qts. of oil, 850 lbs., injectors that weigh 7 lbs. each, and a really big turbo. I love diesels, especially TDI (direct injection turbo) type, but maintenance is KEY.
I almost forgot to tell what the verdict was on what happened to the motor to cause the damage. There were plenty of educated guesses, it belonged to a paving company in Utah and was not maintained very well, it showed evidence of lack of oil changes and dirty fuel. (Filters). Still, what happened to that (1) cylinder and not the rest? A common problem w/ diesels is a leak in the intake tract post-filter, (or the installation of a K&N, same result), which causes *dusting* of the motor and destroys the rings. They run on super-compressed air and really suck it in.
I did not know until I was re-assembling the block and cleaning parts when I discovered (1) completely plugged piston oil squirter. Just like a 911, these motors have tiny tubes that squirt a stream of (relatively cool) oil into the bottom of the piston to cool it, and lack of oil changes killed this motor. The bad piston showed tell-tale marks from being cooked, (it looked like a torch was pointed at the bottom), and within a matter of time it got toasted. All of the rest of the P/Cs looked fine, and 7 squirters were clear.
There was also this little issue w/ dirty fuel, this what I found in the fuel filter/H2o separator, (which was filthy), when I cleaned it:
It looks like the particular type of reddish dust that was everywhere on the truck from the Utah dessert, but how on earth did it get in the fuel supply??
