Inspection
| Action
|
DEFINITION: Base engine misfire with coolant comsumption
|
Preliminary Inspection
| Verify that there are no external coolant leaks. Refer to
Loss of Coolant
in Engine Cooling.
|
Isolate Affected Cylinders
|
| • | Cylinder balance test with scan tool |
| • | Cooling system pressurization |
| • | Inspection of glow plugs |
| • | Cylinder leakdown test |
|
EGR System Inspection - if equipped
|
| • | Inspect EGR valve and intake system for evidence of coolant leakage. |
| • | Replace the EGR cooler if any problem is found. |
|
Injector Tube Leakage
|
| • | Remove the injectors and injector tubes of affected cylinders. |
| • | Inspect for carbon tracking on the tapered seating surface of
the cylinder head and the injector tube. |
| • | If evidence of injector tube leakage is found, inspect the tapered
sealing surface on the cylinder head and the injector tube for improper machining
or debris. |
| • | Clean debris and reassemble, or replace cylinder head or injector
tube if necessary. |
|
Cylinder Head Gasket Leakage
|
| • | Remove cylinder heads of the affected cylinder bank and inspect
for damage. |
| • | Replace components as necessary. |
|
Cylinder Head or Engine Block Damage
|
| • | Inspect the cylinder heads for cracks and warpage. |
| • | Inspect the cylinder block for damage. |
| • | Inspect the cylinder block to head mating surface for staightness. |
| • | Replace components as necessary. |
|
