TROUBLESHOOTING
14-6
1.5 Excessive black smoke
1.5.1 Check items before troubleshooting
(1) Clogging of air cleaner element
(2) Use of poor quality fuel
(3) Overload
1.5.2 Problem: Excessive black smoke
Problem: Excessive black smoke
Adjust smoke set
Adjust engine
Is the compression pressure normal?
Inspect fuel injection nozzles
Inspect valves, cylinder head gasket, pistons and piston rings
Inspect fuel injection pump
NO
YES
YES
YES
YES
NO
NO
NO
Is the smoke set amount of
the fuel injection pump normal?
Is the engine correctly adjusted
(valve clearance excessive,
fuel injection timing out of order)?
Are fuel injection nozzles normal (spray state,
injection-valve opening pressure too high)?
To Next Page
Loading...
Need help?
General
