ENGINE TROUBLESHOOTING (CONT)
TEST OR INSPECTION
13. FUEL USE IS EXCESSIVE (CONT)
Step 2. Check for internal fuel leaks.
An increase in engine oil level indicates an internal fuel oil leak.
Replace rings and cylinder liners.
b. Check injection valve connections.
A gradual increase
Step 3. Small increases in fuel use can be caused by factors affecting normal running.
(See MALFUNCTION no. 3 and no. 7.)
Step 4. Check fuel ratio control.
Step 5. Check injector nozzles for defects.
Step 1. Check for oil flooding in valve compartment.
Install plugs in both ends of rocker arm shaft. (See page 3-211.)
Step 2. Inspect valve guides for wear.
Step 3. Inspect piston rings.