TRUCK SERVICE MANUAL
FUEL SYSTEM
Complaints And Corrections
Correction
Charted on the following pages are the complaints,
Remove the vials and check the relative accuracy by
showing the items to check for correction of the
filling one to various levels and pouring into the other vial.
complaints. Each check is numbered, and the item
If there is significant variation between the two vials,
numbers from Fig. 61121 are given for quick location, so
mark the vials (spot of paint on one) and record the
you may go immediately to the tabulated description of
relative variation for future reference in troubleshooting.
the causes and corrective action as necessary.
If the differential is significant at 132 cc, choose one vial
(the one marked with a spot of paint above) for machine
Check 1-Vials
Replace with correctly calibrated vials as soon as
Cause
possible.
Differential of 1 cc or more between the vials.
Adjust solenoid outlet line so that 100% of the metered
fuel enters the vials. (For minimum fuel foam, direct
stream of fuel against side of vial.)
Foam will settle in approximately one minute. To prevent
this time loss a 1" diameter hole may be cut in the top
panel (with panel removed) and the foam may be stirred
Metered fuel partially missing vials.
with a wire or rod.
Foam preventing accurate reading of fuel delivery in
vials.
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