Andrew Grebneff wrote: > > >Hi All, > > > >Just a quick Diesel question. I just purchased a 1969 Mercedes (imported > >version) (sp) diesel but the PO says that it smokes a lot! Where Do I > >start? I have only worked on things with spark plugs so I'm a little > >ignorant on these things. > > White smoke: antifreeze burning. Head-off time. Blown gasket or head > crack to waterpassage. White can also indicate unburned diesel when it occurs on cold engine start-up. > > Blue smoke: rings at least. Indicates worn/softened oil rings or > cracked head penetrating oilway. > > Black smoke: injectors need cleaning, adjusting or replacing and/or > fuelpump pushing too much fuel and/or pump timing out. > > Warning: a diesel (or gas engine!) pumping too much fuel can suffer > from excessive cylinder wear due to washdown of lubricating oil by > the excess fuel. Diesel fuel is actually a light oil, so the excess on the cyl. walls is not as much a negative as it is in a gas burner. This is one of the reasons diesels tend to run more hours than gasoline engines. -Dana- > > That's A 3.0 five? > -- > Andrew Grebneff > 165 Evans St, Dunedin 9001, New Zealand > <andrew.grebneff@stonebow.otago.ac.nz> > Seashell, Macintosh, VW/Toyota van nut |
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