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| troubleshooting | |
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| Troubleshooting (diesel engine) |
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symptom | possible problem |
| solution |
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| No Fuel reaching injection pump? |
| Add fuel. Check entire fuel system. |
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| Defective fuel pump? |
| Replace fuel pump. |
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| Fuel fi lter clogged? |
| Replace fuel fi lter and clean tank. |
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| Faulty fuel supply line? |
| Replace or repair fuel line. |
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| Compression too low? |
| Check piston, cylinder and valves. Adjust or |
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| repair per engine repair manual. | |
Engine will not start or start is delayed, |
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Fuel pump not working correctly? |
| Repair or replace fuel pump. | |
although engine can be turned over. |
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Oil pressure too low? |
| Check engine oil pressure. | |
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| Low starting temperature limit exceeded? |
| Comply with cold starting instructions and |
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| proper oil viscosity. | |
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| Defective battery? |
| Charge or replace battery. |
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| Air or water mixed in fuel system? |
| Check carefully for loosened fuel line |
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| coupling, loose cap nut, etc. | |
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| Engine oil too thick? |
| Refi ll engine crankcase with correct type of |
At low temperatures engine will not start. |
| oil for winter environment. | |
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| Defective battery? |
| Replace battery. |
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Engine fi res but stops soon as starter is | Fuel fi lter blocked? |
| Replace fuel fi lter. |
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Fuel supply blocked? |
| Check the entire fuel system. | |
switched off. |
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Defective fuel pump? |
| Replace fuel pump. | |
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| Fuel tank empty? |
| Add fuel. |
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Engine stops by itself during normal | Fuel fi lter blocked? |
| Replace fuel fi lter. |
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Defective fuel pump? |
| Replace fuel pump. | |
operation. |
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| Mechanical oil pressure shutdown sensor |
| Add oil. Replace low oil shutdown sensor if |
| stops the engine due to low oil? |
| necessary. |
| Fuel tank empty? |
| Replace fuel fi lter. |
| Fuel fi lter clogged? |
| Replace fuel fi lter. |
| Fuel tank venting is inadequate? |
| Ensure that tank is adequately vented. |
| Leaks at pipe unions? |
| Check threaded pipe unions tape and tighten |
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| unions a required. | |
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Low engine power, output and speed. |
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Speed control lever does not remain in |
| See engine manual for corrective action. | |
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| selected position? |
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| Engine oil level too full? |
| Correct engine oil level. |
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| Use No. |
| Injection pump wear? |
| injection pump element and delivery valve |
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| assembly and replace as necessary. |
page 38 — stxd6i