DV11
Operation and Maintenance
49
Technical Information
Printed in Mar. 2005 PS-MMA0608-E1A
Condition Causes
Remedies
1) Starting difficult
(1) Starting motor trouble
z
Refer to diagnostics
(2) Fuel system trouble
z
Refer to diagnostics
z
Valve's poor shut, stem
distortion
Repair or replace
z
Valve spring damage
Replace valve spring
z
Cylinder head gasket's leak
Replace gasket
(3)
Compression pressure lack
z
Wear of piston, piston ring
or liner
Adjust
z
Injection timing incorrect
Check by SCAN-200
2) Idle operation abnormal
z
Air mixing at high pressure
pump
Remove air
3) Engine output insufficient
z
Valve clearance incorrect
Adjust
z
Valve tightness poor
Repair
z
Cylinder head gasket's leak
Replace gasket
z
Wear, stick, damage of
piston ring
Replace piston ring
z
Injection timing incorrect
Check
z
Fuel injection amount
insufficient
Check injector
z
Injector injection pressure
improper or stuck
Adjust or replace
z
Supply pump's function
lowered
Repair or replace
z
Fuel pipe system clogged
Repair
z
Air suction amount
insufficient
Clean or replace air
cleaner
(1) Continuous output
insufficient
z
Turbocharger poor
Repair or replace
z
Compression
pressure
insufficient
Disassemble engine
z
Injection timing incorrect
Check
z
Fuel injection amount
insufficient
Check
z
Injector infection pressure,
infection angle improper
Repair, replace
z
Supply pump's function
lowered
Repair or replace
(2) Output insufficient
when in acceleration
z
Air intake amount
insufficient
Clean or
replace air cleaner
z
Engine oil insufficient or
poor
Replenish or replace
z
Cooling water insufficient
Replenish or replace
z
Fan belt loosened, worn,
damaged
Adjust or replace
z
Cooling water pump's
function lowered
Repair or replace
z
Water
temperature
regulator's operation poor
Replace
z
Valve clearance incorrect
Adjust
4) Overheating
z
Exhaust system's resistance
increased
Clean or replace
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