A Series Diesel Engine Troubleshooting Logic 46
Compression Knocks
Cause
Correction
Air in the Fuel System
Bleed the Fuel System.
Refer to Page 83.
OK
Poor Quality Fuel
Verify by Operating from a Temporary
Tank with Good Fuel; Clean and Flush the
Fuel Supply Tanks.
OK
Engine Overloaded
Verify that Engine Load Rating is Not
Being Exceeded. Refer to Page 61.
OK
Incorrect Injection Pump Timing
Check/Time Injection Pump.
Refer to Page 68, 96
OK
Malfunctioning Injectors
Replace Injectors.
Refer to Page 88.
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