Table 5-2. DS/GS Troubleshooting
Test or Inspection
1. ENGINE DOES NOT DEVELOP FULL POWER.
Step 1. Check manifold and gasket for leaks or damage.
If no leaks or damage are present go to step 2.
Repair or replace gaskets or manifold as needed (para 4-32).
Step 2. Check engine timing.
If timing is correct go to step 3.
If timing is off, reset (para 5-7).
Step 3. Check for misfiring cylinder.
Remove and check each fuel injector and inspect for clogged parts. If clogged, clean or replace
as necessary (para 5-30 or 5-31).
Step 4. Check engine compression.
2. ENGINE OVERHEATS.
Check cooling fins for dirt or debris.
3. LOW OIL PRESSURE.
Step 1. Check for clogging of oil filter.
Remove oil filter. Replace as required (para 4-22).
Step 2. Inspect oil pressure valve for clogging or damage.
Remove and clean oil pressure valve. Inspect valve, valve seat, and valve spring for damage.
Replace damaged parts (para 4-31).
Step 3. Inspect oil pump for damaged parts.
Remove and clean oil pump. Inspect oil pump for worn, scored, or damaged parts. Replace
worn or damaged parts (para 5-27).