Test 8: Injector Malfunction - Suzuki GRAND VITARA 2005 Service Manual
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Also See for GRAND VITARA 2005:
- Owner's manual (1736 pages) ,
- Service manual (801 pages) ,
- Manual (35 pages)
Table of Contents
1A-112 Engine General Information and Diagnosis:
Test 8: Injector malfunction
WARNING
!
When servicing fuel system, be sure to observe WARNING in "Precautions on Fuel System Service: in
Section 1G" to reduce the risk of fire and personal injury.
Step
1
CHECK THE FUEL REGULATION BALANCE, INJECTOR
BY INJECTOR
• With the engine at idle speed, coolant temperature > 80
°C, 176 °F, display the each injector fuel flow correction
values "Cyl # FF Correction" on Data List of SUZUKI scan
tool.
The normal value for fuel flow correction for an injector is ±
1.0 mm
/stroke.
3
This tolerance may increase with time, but indicates an
injector/cylinder fault if it exceeds ± 5.0 mm
Do one of these values exceed
2
CHECK THE FUEL REGULATION BALANCE, INJECTOR
BY INJECTOR:
1) If at least one of these values is > +5.0 mm
• Check the valve clearance.
• Check the engine compression referring to
"Compression Check: in Section 1D".
– If the compression test reveals a cylinder fault,
carry out the necessary repairs.
– If the compression is in order, check the conformity
of the assembly of the injector referring to "Fuel
Injector Removal and Installation: in Section 1G",
then check the fuel regulation again, injector by
injector. If the customer complaint is still present,
replace the injector
2) If at least one of these values is < –5.0 mm
• Check the valve clearance.
• Check the level and condition of the engine oil.
• Remove the injector with the largest adjustment.
• If there is pollution via the diesel, check the condition
of the cylinder concerned (cylinder, piston, valves).
• Replace the injector.
NOTE
Before replacing an injector, check for the
presence and conformity of its sealing washer
(refer to "Table 5: Poor Performance with Smoke:
").
After replacing an injector, enter the code into an fuel
injector that has not been programmed referring to
"Registration Procedure for the Fuel Injector Calibration
Code: in Section 1C".
Is there in good condition?
Action
3
/ stroke.
±
5.0 mm
3
/stroke?
3
/stroke
3
/stroke
Yes
Go to Step 2.
Go to Step 3.
S5JB0B1104173
No
Go to Step 4.
Repair as necessary.
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