Someone asked about voltage between engine and
body with engine running, so here are the results using a
digital VM:

'88 Westy with stock 2.1L with intermittent hesitation
sydrome.

Engine dead cold. (2 deg C)
Started, turned on highbeams
Opened engine lid, tried to find rust free bare metal or
bolt on body. Gave up and used exhaust heat shield for
body connection.
Tried various engine block areas, and got same
readings at idle, so finally jammed probe into gap near
bellhousing.

Readings were a solid 0.06V at idle, changing to a
steady 0.056V at approx 2000rpm.

Is this the surprising data you were expecting?

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Shawn Wright, Systems Manager
Shawnigan Lake School
http://www.sls.bc.ca
swright@sls.bc.ca