Why does my Onan genset LPG not start?

Onan LPG Gen Set wont start, HELP, HELP! Changed the oil and filter on my Onan Mobile Genset HGJAB (MARQUIS) , 6500 kw (333 hours) high pressure propane fueled. Ran like a bandit one hour before oil change, now the darn thing wont start at all?

What to do if your engine cranks but not starts?

Loosen the high pressure line at two injectors and visually check fuel delivery while cranking the engine. Replace injection pump, if fuel is not being delivered. Check the injection pump timing.

How to change the oil in an Onan LPG?

To change oil I opened the access panel, opened the LPG oil drain ****, opened the engine oil **** drained oil. CLOSED both petcocks. Removed and replaced the oil filter with new one.

What to do if your propane generator won’t start?

With a propane generator, it is easy to rule out fuel as the cause (meaning the issue is ignition-related. Shut off the coach main 120 VAC breaker. Get a propane bottle/torch– do NOT light it. Turn on propane with the nozzle of the torch in the air cleaner. If it tries to start, you have a fuel issue. If not, an ignition issue.

What to do if your Onan gen set wont start?

Shut off the coach main 120 VAC breaker. Get a propane bottle/torch– do NOT light it. Turn on propane with the nozzle of the torch in the air cleaner. If it tries to start, you have a fuel issue. If not, an ignition issue.

What should I do if my Onan engine has no spark?

This is a typical ignition coil for an Onan engine. If you are getting no spark at the spark plugs, remove the plug wires and check for continuity. No continuity means a bad wire. Replace both of them. Verify the condenser is not grounded.

Why does my Onan LPG engine not start?

LESSON LEARNED: Engine would not start because hose from bottom of carburetor to crankcase behine the drain valve had deteriorated due to the use of a non-approved type rubber hose which disintegrated . I must have touched it when changing the oil, and it crumpled without my knowledge. Replaced the hose and it now runs great.

What to do if your Onan ignition is not working?

ONAN IGNITION SYSTEM TROUBLESHOOTING This is a typical ignition module for an Onan engine. This is a typical ignition coil for an Onan engine. If you are getting no spark at the spark plugs, remove the plug wires and check for continuity. No continuity means a bad wire. Replace both of them. Verify the condenser is not grounded.

What should I do if my Onan generator wont start?

When the air flow system clogs, the required flow of air gets restricted. The best thing would be to pull off the air filter to check whether it has some impurities clogged in. It is always a better idea to clean the air filter either with a brush or by knocking it on the floor.

Why does my engine not start when I Smell propane?

Holding the primer button in for a longer period of time can cause engine flooding. If you feel your engine is flooded (especially if you smell propane) turn the tank off then crank the engine over a couple of times to burn off the excess propane in the engine combustion chamber. Have more questions? Submit a request

Is it possible to fix an Onan generator?

In addition to that, you could cause damages if you attempt to fix the machine without proper tools and knowledge. Fortunately, troubleshooting Onan generator is not a difficult task so as long as you could grasp the fundamentals, everything would turn out to be fine.

Why is my Onan generator producing low AC voltage?

If field flash voltage seems pretty normal, the regulator could be the source of problem which you could determine simply by running 12 volts through a diode to the regulator pin 9. In the case the generator starts producing normal or slightly low AC voltages after that, the regulator is definitely defective.

What should I do if my propane engine wont start?

If you are not using a tank regulator from USCarburetion make sure the regulator is low pressure (0.5 psi) if you have a low pressure kit and that it has a sufficient BTU rating. (10,000 Btu’s per hour per horsepower (ex. 10 hp = 100,000 BTU’s) 3.) Check that the pipe sizing is correct for your application.

Why is my propane tank not filling up?

1.) The first and most important step is to make sure that you are using a propane tank that has been refilled multiple times. (at least 4 times.) Tanks that have not been filled multiple times will have air trapped inside of them causing the fuel mixture in the carburetor to be too lean. 2.)

What to do if your Onan controller won’t start?

Go to the genset and use the switch on the set itself. Press ‘Stop’ 3 times within 5 seconds. The light in the switch will start flashing. If the light flashes 3 times, pauses for 3 seconds, and flashes 3 more times, press and immediately release ‘Stop’ one more time. This will put the controller into Fault Read Mode.

Why does the Onan genset Blink 3 times?

Onan genset blinks 3 times on start button will not engage… 3600 Onan code 32. But have good battery voltage. Fresh I have a emerald plus onan nhe 6.3 that has the dreaded dying after start is released. I need help figuring out if it’s the board or something bigger. … read more

What’s the problem with the Onan Cummins Generator?

Onan cummins microquiet generator has a hidden defective part. If your onan generator runs fine then stops, this is likely the free simple fix. It’s incredible how the fix is this simple. Loading…

Why does the oil pressure switch on Onan generator stick open?

The oil pressure switch of Onan generator often sticks open in case the unit has not seen any use for an extended period of time. In many cases, the situation could be resolved by multiple start/stop cycles, some light tappings should work as well. 2. Defective Control Board

What should I do if my Onan generator is not running?

As soon as the Onan power generator is up and running, use the multimeter to check the AC output voltages. If there is no AC, proceed to check the field flash voltage through the field flash pin of the board. In the case field flash voltage is not present, the control board may be defective.

Why does my Onan start light not work?

Onan gensets have a low oil cut-off that can affect the unit’s operation. The newer Onan gensets will flash a code on the start switch light if they encounter a problem. If you go to they have a manual section which should give you additional troubleshooting options and a guide to deciphering the codes.

What do I need to start my Onan generator?

Getting the Engine Running Before any evaluation of the controls, regulator or generator can proceed, the Onan engine must have oil and fuel, be in running condition and the 12-volt battery charged. The electronic governor, 151-0752, on Models BGM and NHM, Spec B and later, must be functioning properly.