IDLE SPEED ERRATIC.

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ENGINE (CONT)

8. IDLE SPEED ERRATIC.

WARNING

Diesel fuel is flammable. Do not perform this procedure near fire, flame, or

sparks. Injury or death to personnel could result.

Step 1.

Check for air leaks and damaged fuel lines.

If there are air leaks or damaged fuel lines, tighten loose

connections or replace fuel lines (pages 4-25, 4-44).

If there are no air leaks or damaged fuel lines, go to step 2.

NOTE

If STE/ICE-R CI Engine GO-NO GO Chain does not diagnose cause of problem, return to

this troubleshooting table.

Step 2.

Perform STE/ICE-R CI Engine GO-NO GO Chain test procedures in the DCA

diagnostic mode.

If malfunction is found, refer to List of Tasks (page iii) or

Alphabetical Index (page Index-1) and repair or replace

damaged or faulty components.

If malfunction is not found, notify direct support maintenance.

9. ENGINE KNOCKS WHEN COLD.

Step 1.

Check for low engine oil level.

If engine oil level is low, add oil (TM 5-2420-224-10).

If engine oil level is not low, go to step 2.

Step 2.

Check for stuck fuel injector nozzles by fully depressing accelerator several

times to release needles.

If problem continues, notify direct support maintenance.

10. OIL PRESSURE GAGE READS LOW OR NO OIL PRESSURE.

Step 1.

Check for low engine oil level.

If engine oil level is low, add oil (TM 5-2420-224-10).

If engine oil level is not low, go to step 2.

Change 2

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