so im new to VW diesels, and i got a 1.9L TD, engine code AAZ (1997 jetta), and i went out and bought the bentley manual and all the tools to time it properly. (just put a new engine in - long story there)
problem is, the wording in the manual with regards to fuel pump timing is a little iffy, i was hoping someone here could enlighten me.
heres what i remember from the manual:
obviously, setting the crank to #1 TDC is easy enuf. remove valve cover, ensure #1 cam lobes are pointing up.
install dial indicator into hole in back of injection pump, set to 2.5mm preload.
rotate eng COUNTER cw until `dial indicator stops moving`.
(this is my first problem - it never stops moving, of course, but it does reverse direction - is that what they are referring to?)
set preload to approx 1mm. rotate eng cw, stopping exactly at #1 TDC.
reading on dial should be 0.80mm, +/- 0.02mm.
(heres my second problem - is that 0.80mm, plus the "approximate" 1.0mm preload i set before? if so, thats 1.80mm. or is it just straight up 0.80mm, in which case the "approx" 1mm preload better be EXACTLY 1.0mm, or the whole thing is a **** waste of time!)
thanks for the help!
jason
problem is, the wording in the manual with regards to fuel pump timing is a little iffy, i was hoping someone here could enlighten me.
heres what i remember from the manual:
obviously, setting the crank to #1 TDC is easy enuf. remove valve cover, ensure #1 cam lobes are pointing up.
install dial indicator into hole in back of injection pump, set to 2.5mm preload.
rotate eng COUNTER cw until `dial indicator stops moving`.
(this is my first problem - it never stops moving, of course, but it does reverse direction - is that what they are referring to?)
set preload to approx 1mm. rotate eng cw, stopping exactly at #1 TDC.
reading on dial should be 0.80mm, +/- 0.02mm.
(heres my second problem - is that 0.80mm, plus the "approximate" 1.0mm preload i set before? if so, thats 1.80mm. or is it just straight up 0.80mm, in which case the "approx" 1mm preload better be EXACTLY 1.0mm, or the whole thing is a **** waste of time!)
thanks for the help!
jason