[Vwdiesel] Injection pump findings, and q's
jon at kenneke.com
Wed Feb 16 19:55:29 EST 2005
After many years, I finally purchased a pump timing quage tool. (I already
had the cam locks, etc.). I have a 1.9NA overland in a 1983 Vanagon.
So, today, since my Van's engine is sounding a little "clattery" I went to
check cam and pump timing. Cam timing is right on. I was confused for a
sec: Bentley sez: "TDC is the cams lobe up". I was thinking wrong, and
expecting the intake valve to be straight up. No, both exhaust and
intake need to be pointing up-ish (kind of to the sides and up). I should
have thought about that.
But, once I had that, I put the cam lock in, and the index mark on the
crank lined right up. Cool.
Then, did the pump timing guage. I measured .050 inches ,which is 1.27 mm.
Way, way off. No wonder why the engine was clattering. I think this drift
was probably due to two things: the morons that put the engine in never
checked it, and the pump has worn. It was probably high to begin with, and
wore just enough to make the engine clatter.
So, now I need to pull the timing belt cover off (which is a bit of a pain
in a Vanagon) to set the pump timing.
1) Will leaving the timing at 1.27 cause problems (besides loudness)?
2) I had to pull the valve cover off (of course). The shop used sealant
with the gasket. I don't think this is right. I scraped the sealant off,
and replaced the cover/gasket. I don't see any mention of
sealants in the manual. Comments?
3) The fueling screws seem to be "hidden". Is drilling the "covers" out
the way to gain access?
For folks that are contemplating doing the above, please let me know if
you have questions. I can help, maybe. I should have snapped a few
pictures...but when I set the pump timing, I will be sure to snap some.
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