Engine Hard to Start or Will Not Start (Exhaust Smoke Present)
| Cause | Correction |
|---|---|
| Incorrect Starting Procedure | Refer to “The Starting Procedure Matrix“. |
OK | |
| Engine Cranking Speed too Slow | Check Engine cranking RPM. Refer to “Engine Will Not Crank or Cranks Slowly“. |
| OK | |
| Starting Aid Needed for Cold Weather | Check/ repair or replace cold starting aid, if necessary. |
| OK | |
| Air in the Fuel System | Bleed fuel system and check for suction leaks. |
| OK | |
| Fuel Supply Restricted | Clean or replace pre-filters and screens, check for fuel line restrictions. |
| OK | |
| Fuel Drain Back | Verify fuel return line is plumbed to the bottom of the fuel tank. |
| OK | |
| Malfunctioning Fuel Return Overflow Valve | Check / replace fuel return overflow valve. |
| OK | |
| Fuel Transfer Pump Malfunctioning | Check / replace fuel transfer pump. |
| OK | |
| Intake Air System Restricted | Check intake air system. |
| OK | |
| Fuel Contaminated | Verify by operating engine from a temporary supply tank. |
| OK | |
| Injection Pump Timing Incorrect | Check injection pump timing. |
| OK | |
| Valves incorrectly adjusted | Adjust valves. |
| OK | |
| One or more Injectors Worn or Malfunctioning | Check / replace injectors. |
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