Troubleshooting
8-7
FUEL SYSTEM DIAGNOSTIC CHART
PROBLEM POSSIBLE CAUSE POSSIBLE FIX
Engine won’t start
or not running right
Fuel tank vent
obstructed
Clean vent hose
and/or fi tting. Check
for kinks
Fuel line Blocked Check for kinked
hose
Lack of fuel Clean fi lter. Check
for clogged
anti-siphon valve
Water in fuel Eliminate water
Clogged fuel fi lter Replace fi lter
elements
No fuel reaching
engine
Check fuel pump
output.
Clean fi lters/Check
fuel tank gauge level
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