MQ PS4030 SAW — TROUBLESHOOTING
TABLE 12. TROUBLESHOOTING (ENGINE, CONTINUED)
SYMPTOM | POSSIBLE CAUSE | SOLUTION | |
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| Clear air intake of dirt and debris. | |
| Intake air restricted? | Replace air cleaner elements as | |
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| necessary. | |
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| |
"Weak in power" compression is proper | Improper fuel or contaminated fuel? | Flush fuel system if contaminated. | |
Refill with clean fuel of prescribed | |||
and does not misfire. |
| quality. | |
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| Injection Line leaks? | Repair or replace lines. | |
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| Charge air line leaking? | Repair or replace line. | |
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| Water in fuel system? | Flush fuel system and replace with | |
| correct type fuel. | ||
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"Weak in power" compression is proper |
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| |
Ignition defective? | Replace ignition. | ||
but misfires. | |||
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| Damage, or worn Injector orifices? | Clean or replace injectors. | |
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| Wrong fuel type? | Flush fuel system, and replace with | |
| correct type of fuel. | ||
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| |
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| Clear air intake of dirt and debris. | |
| Intake air restricted? | Replace air cleaner elements as | |
Engine overheats. |
| necessary. | |
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| Injection Valve defective? | Replace Injection valve. | |
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| |
| Cooling fins dirty? | Clean cooling fins. | |
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| Oil level to low or too high? | Adjust oil to proper level. | |
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| Governor adjusted correctly? | Adjust governor. | |
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Rotational speed fluctuates. | Governor spring defective or missing? | Replace governor spring. | |
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| Fuel flow restricted? | Check entire fuel system for leaks or | |
| clogs. | ||
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| Loose, damaged wiring? | Ensure tight, clean connections on | |
| battery and starter. | ||
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Starter malfunction. |
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Battery insufficiently charged? | Recharge or replace battery. | ||
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| Starter damaged or internally shorted? | Replace Starter. | |
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MQ PS4030 SAW • OPERATION MANUAL — REV. #0 (02/29/08) — PAGE 57
