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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13160
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Onan 5500 marquis gold gen.runs as long as starter swich pressed,

Customer Question

onan 5500 marquis gold gen.runs as long as starter swich pressed, power to fuel pump lost as soon as I release rocker switch, any ideas? flashed code 3 previous, added oil to bring it up to full , tail pipe sooty, burning oil
Submitted: 1 year ago.
Category: Small Engine
Customer: replied 1 year ago.
waiting for reply
Customer: replied 1 year ago.
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  JohnF2015 replied 1 year ago.
This machine has a run relay wired into the system so that once the machine starts and you release the start switch it should maintain power going to the fuel pump to keep it operating. I would suggest replacing the run relay on the machine, I believe this will fix your problem.
Expert:  Hank F. replied 1 year ago.
Hello, thank you for requesting me. I know this unit is in the HGJ series, but I will need to know the full model number of the genset, exactly as it is written on the data label. Also, I will need to know what fault code you are getting. Code 3 is merely a service indicator.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.The light will flash (X) number of times, pause for 1 second, and flash for (X) number of times again. Count the flashes before and after the pause.This will be the Fault Code.Example: 2 rapid flashes, 1 second pause, 5 rapid flashes is a Fault Code 25.There may be more than one Fault Code stored, so watch the light very carefully. If there is more than one code, it will display them all in order, and then start over again. Be very careful not to misread a first level fault code (single digit code) as a second level fault code (double digit code).The way to tell the difference is by the length of the pauses.There is a 1 second pause between digits of a second level code, and a 3 second pause between codes.For example, if it is flashing 2 times, 1 second pause, flashing 2 times, 3 second pause and repeating, then this is a second level fault code of 22.If it is flashing 2 times, 3 second pause, flashing 2 times, 3 second pause and repeating, then this is a first level fault code of 2. What Fault Code are you getting?.Lastly, this unit does not have a run relay, at least not one you can get at. It is built into the control board, and is not replaceable..