Chery A1 2009 Service Manual page 303

ELECTRONIC ENGINE CONTROLS - ENGINE SYMPTOM DIAGNOSIS
10.
CHECK EVAPORATIVE EMISSIONS (EVAP) SYSTEM
• Disconnect the canister control valve (1) hose.
• Place a stiff piece of paper over the hose end,
start engine.
Does vacuum hold the paper?
Yes >>
Check for a vacuum leak in the EVAP system (See Evaporative Emissions in Section 03 Electronic
Engine Controls) and refer to EVAP control circuit relative to the DTC.
No >>
Go to the next step.
11.
CHECK ENGINE CYLINDER COMPRESSION
• Check engine cylinder compression.
• Compression should not be less than 1,000 kPa, and not vary more than 25 percent from cylinder to cylinder.
Is engine compression correct?
Yes >>
Go to the next step.
No >>
Repair as necessary.
12.
ADDITIONAL CHECKS
• Check the following for possible additional causes:
− Driveline
− Transaxle
− Charging system
− A/C system (for surge with A/C on)
Are the checks OK?
Yes >>
See Diagnostic Help for additional information.
No >>
Repair as necessary.
196
03–
PZSMD030011
Chery Automobile Co., Ltd.