Fuel System Operation and Tests
On Nippondenso in-line pumps:
1. Unscrew hand primer on fuel supply pump until it can
be pulled by hand.
2. Operate the hand primer until a smooth flow of fuel,
free of bubbles, comes out of the filter plug hole.
IMPORTANT: Be sure hand primer is all the way
down in barrel before tightening to
prevent internal thread damage.
3. Simultaneously stroke the hand primer down and close
the filter port plug. This prevents air from entering the
system. Tighten plug securely. DO NOT overtighten.
4. Lock hand primer in position.
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