4

Possible Causes

• •Blocked air flow
• •Blocked exhaust system
• •Broken or loose wires
• •Broken sender lead
• •Closed fuel shutoff valves
• •Dirty or restricted air cleaner
• •Faulty governor actuator operation
• •Faulty governor controller board
• •Faulty pressure cap
• •Fuel solenoid valve malfunction
• •Fuel supply issue
• •Governor linkage binding
• •Grounded or shorted S6 switch leads
• •Grounded sender lead
• •Grounded temperature sender
• •Ignition system malfunction
• •Incorrect battery voltage
• •Incorrect field resistance
• •Incorrect gas supply pressure
• •Incorrect oil level
• •Incorrect quadrature resistance
• •LPG contains more than 2.5 percent butane below 32 °F (0 °C)
• •LPG fuel tank less than half full
• •Loose drain fittings
• •Loose hose
• •Loose sender lead
• •Loose spark plug cable
• •Low coolant level
• •Low rate of LPG vaporization on cold days
• •Magnetic pick-up malfunction
• •Open pressure sender
• •Overload Condition
• •Shorted sender lead
• •Worn or malfunctioning engine / Low cylinder compression

Suggested Actions

1. 1Check battery voltage
2. 2Check choke
3. 3Check coolant level
4. 4Check coolant temperature inlet/outlet of radiator
5. 5Check field resistance
6. 6Check for a blocked exhaust system and service as necessary
7. 7Check for blocked air flow
8. 8Check for broken or loose sender lead
9. 9Check for grounded or shorted sender lead
10. 10Check for leaks while running with dye in oil
11. 11Check for loose hose or drain fittings
12. 12Check fuel solenoid valve operation
13. 13Check fuel supply
14. 14Check governor actuator operation
15. 15Check if pressure sender is open
16. 16Check if temperature sender is grounded
17. 17Check magnetic pick-up for proper operation
18. 18Check oil level
19. 19Check oil pressure
20. 20Check pressure cap
21. 21Check quadrature resistance
22. 22Check the gas supply pressure and adjust as necessary
23. 23Check the governor controller board
24. 24Check the governor linkage for binding and service as necessary
25. 25Clean contaminated area
26. 26Conduct a cylinder compression test and service the engine if it is worn or malfunctioning
27. 27Conduct the ignition system tests and service as necessary
28. 28Evaluate fault codes
29. 29Fill the LPG fuel tank if less than half full
30. 30Inspect/secure the spark plug cable on the spark plugs
31. 31Keep LPG container at least half full on cold days to provide the rate of vaporization required to keep up with genset fuel demand
32. 32Open any closed fuel shutoff valves
33. 33Service the air cleaner
34. 34Use HD-5 grade LPG

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