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SYMPTOM
Engine Does Not Crank
Engine Performance - While Under Load
SYMPTOM
Engine Stalls/Quits
Runs Rough
Misses
Hesitation/Stumble
Surge
Backfires
•
Dead Battery
•
Ground Loss
•
Ancillary Components Binding or Seized
•
OEM Shutdown - Oil Level Safety
•
Starter Lockout Relay Failure
•
Ignition Switch Failure
•
Bad Starter
•
Crank Control Wire Failure
•
Loose Connection or Corrosion
•
Faulty OEM Drivers Safety Shut-off Seat Switch
•
Low Battery Voltage
•
Low Fuel Pressure
•
OEM Safety Shutdowns
•
Bad MAP Sensor
•
Air Restriction
•
Coil Failure
•
Fuel Mixer Binding (Dry Fuel)
•
Ground Loss
•
Misrouted Spark Plug Wires
•
Fuel System Failure
•
Vacuum Leak
•
Wiring Failure
•
Low Fuel Pressure
•
Spark Plugs Fouled
•
Incorrect Valve Timing
•
Fuel System Failure
•
Misrouted Spark Plug Wires
•
Spark Plug Gap Too High
•
Spark Plugs Fouled
•
Cracked Spark Plug Insulator
•
Incorrect Valve Timing
•
Compression Loss
•
Low Fuel Pressure
•
Spark Plugs Fouled
•
MAP Sensor Vacuum Signal Loss
•
Low Fuel Pressure
•
Map Sensor Failure
•
Application or Ancillary System Momentarily Binding During
Load or Unload
•
Faulty OEM Drivers Safety Shut-off Seat Switch
•
Fouled Spark Plugs
•
Spark Plug Wire Broke
•
IPM/EPM Momentary Ground Loss
•
Excess Lean Condition
•
Fuel Lock-Off Leaking (Dry Fuel)
•
Intake Manifold Leak
•
Bad Intake Valve
34
POSSIBLE CAUSE
POSSIBLE CAUSE
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