TM 10-3930-659-34 Table 3-1.  Troubleshooting (Con’t). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION WARNING Diesel  fuel  is  combustible.    DO  NOT  smoke  or  allow  open  flame  near  fuel  tank.    Failure  to  follow  this warning  will  result  in  death  or  serious  injury  to  personnel.    If  you  are  burned,  immediately  seek  medical aid. Step 3.   Test fuel injection pump (see STE/ICE Test No.  NG31). Replace damaged fuel injection pump (see paragraph 4-24). 5.  ENGINE EMITS EXCESSIVE BLUE OR WHITE EXHAUST SMOKE. WARNING Diesel  fuel  is  combustible.    DO  NOT  smoke  or  allow  open  flame  near  fuel  tank.    Failure  to  follow  this warning  will  result  in  death  or  serious  injury  to  personnel.    If  you  are  burned,  immediately  seek  medical aid. Step 1.   Remove and test fuel injection nozzles (see paragraph 4-23). Replace damaged fuel injection nozzles (see paragraph 4-23). Step 2.   Perform engine assembly compression test (see paragraph 4-1). Replace damaged cylinder head gasket (see paragraph 4-5). Replace damaged compression ring, oil control ring, and oil ring expander (see paragraph 5-3). Step 3.   Inspect valve seat inserts for wear and damage (see paragraph 4-6). Replace damaged valve seat inserts (see paragraph 4-6). Step 4.   Inspect cylinder liners for excessive wear, and compression ring, oil control ring, and oil ring expander for damage. Replace damaged cylinder liners (see paragraph 5-2), and damaged compression ring, oil control ring, and oil ring expander (see paragraph 5-3). 6.  ABNORMAL ENGINE NOISE. Step 1.   Inspect turbocharger for wear and damage by spinning turbocharger turbine wheel and listening for noisy bearings or turbine wheel rubbing in center housing. Replace damaged turbocharger (see paragraph 4-25). Step 2.   Inspect pushrods for bends or rocker arm shafts for wear (see paragraph 4-12). Replace damaged pushrods (see paragraph 4-12). Replace damaged rocker arm shafts (see paragraph 4-12). 3-6