4.8
9929375 R02 - 2016-2019 GENERAL / GENERAL 4 Service Manual
© Copyright Polaris Industries Inc.
EVAP CONDITIONS AND SYMPTOMS
The following conditions and symptoms should be taken into consideration when working on a vehicle with an EVAP
System:
• Cracks in an EVAP hose or canister may cause
– Fuel odor
– Trouble codes being set
NOTICE
A loose fuel cap will NOT trigger a trouble code, but may cause a fuel odor.
Excessive hydrocarbon emissions may be caused by any of the following:
• An ignition misfire
• Improper ignition timing
• Excessively lean or rich air/fuel mixture
• Low Compression
• Worn valves or guides
• Worn cylinder or piston rings
• Vacuum leaks
• Dirty fuel injector
• Defective sensor or damaged sensor wiring
Excessive carbon monoxide emissions may be caused by any of the following:
• Rich air/fuel mixture
• Dirty air filter
• Leaking fuel injectors
• Fuel pressure too high/bad regulator
FUEL SYSTEM
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