TM 10-3930-675-20-1 0006 00-2 TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED 0006 00 Table 1. Engine Troubleshooting Procedures (Non-Error Code) - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4.   Excessive Exhaust Smoke - Black. 1.  Check for dirty or clogged air cleaner element. Service   or   replace   air   cleaner element (WP 0056 00). 2.  Check for restricted or damaged fuel return line. Repair or replace fuel return line (WP 0059 00). 3.  Check for leaking or damaged air   intake   hoses,   lines,   and clamps. Tighten or repair air intake hoses, lines, and clamps (WP 0057 00). 5.   Engine Acceleration - Poor. 1.  Check   and   monitor   engine operating temperature a.  Allow  to  warm  to  operating temperature. b.  Perform cooling system troubleshooting  checks  (WP 0005 00). 2.  Check for leaking or damaged air   intake   hoses,   lines,   and clamps. Tighten or repair air intake hoses, lines and clamps (WP 0057 00). 3.  Check for restricted or sticking accelerator pedal. Remove restrictions from accelerator pedal on cab floor. 4.  Check and test throttle position sensor   operation   (WP   0008 00). Replace  throttle  position  sensor (WP 0061 00). 5.  Check  for  clogged  fuel/water separator. Replace     fuel/water     separator (WP 0058 00). 6.   Engine Deceleration - Poor. 1.  Check for restricted or sticking accelerator pedal. Remove restriction(s) from accelerator pedal. 2.  Check and test throttle position sensor   operation   (WP   0008 00). Replace  throttle  position  sensor (see WP 0061 00). 7.   Engine Performance (Power) - Low. 1.  Check engine oil level. Verify engine oil is not overfilled. (see LO 10-3930-675- 12). 2.  Check  for  clogged  fuel/water separator. Replace     fuel/water     separator (WP 0058 00). 3.  Check for dirty or clogged air cleaner element. Service   or   replace   air   cleaner element (WP 0056 00). 4.  Check for leaking or damaged air   intake   hoses,   lines,   and clamps. Tighten or repair air intake hoses, lines and clamps (WP 0057 00).