[Vwdiesel] Q: TD Fuel Injectors; Engine compression

[LBaird119 at aol.com]

  Usually by 160K miles even if it runs well, new injectors nearly always 
will make enough improvement in running that most are glad they changed 
them.  They often start cold start smoking or poorer mileage at about 
that time though.  Even when the patterns look good, they are often quite 
a bit more coarse than new injectors, at that age.
  Low compression is something to keep in mind but it really isn't an 
issue if it's even, it starts well and doesn't use much oil.  Once it 
doesn't start well on a cold morning and the glow plugs and injectors 
are good, then you know it's likely the compression dropped below 
self ignition when cold.  :(
  Like said, if it ain't broke, don't fix it, unless you're like me!  ;-)
     Loren