Question about Northstar Generator 20 Hp, 13,000 Watt, Gasoline

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I have added oil to the enginn as directed on my new NorthStar generator but the Honda GX620 engine will only run a few seconds and then shuts down. I have 1/2 tank of fuel and the oil level is correct. I tried moving the choke in and out but it will only sputter a few more seconds. Any suggestions?

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Clean out the cabrateor
clean out the tank

Posted on Aug 02, 2009

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1 Answer

My honda 2000 generator only runs for about 3 seconds then shuts off


Its sure that its missing oil at the engine.Modern engines have a oil alert dispositive. Check oil level,if it is low,just fill with more oil at carter engine.

Sep 03, 2014 | Honda EU2000IKN EU 2000 Watt Generator 50...

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Honda generator


The running on choke is caused by a fuel restriction. Check the fuel flow from the tank to the carburetor.Change the fuel filter if it has one. If its good, then the restriction is in the carburetor. The generator is shutting down due to the low rpm coming from the engine. A carburetor rebuild may need to be done.

Oct 19, 2013 | Electrical Supplies

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Generator runs for about 10 minutes and then stops like it is running out of fuel. 5500 NorthStar with Honda motor. Waned fuel tank and lines, had carb. Rebuilt and cleaned all out with carburetor cleaner....


It appears you have eliminated all of the fuel related issues. That would leave the generatoor safety circuits as a possible reason for the unit shutting down.

The Low Oil Level Sensor is the major reason that generators shut down when your sure there is not a fuel supply problem. Make sure the unit is fully servied with OIL. If the problem persists disconnect ONE wire from the low oil level sensor and see if the problem persists. If you still have the problem inspect the black or green wire from the Start run switch all the way to the Air shroud on the engine looking for signs of chaffing.
If you can not find anything then you will have to re-focus your attention on the fuel system once again. If you have a solenoid on the base of the carb.. the solenoid can be WEAK and stop remaining open once hot. This will cause the engine to lean out and die.
You should also check fuel flow to the carb. The flow should fill a spary paint can lid in under 10 seconds to the point your worried about it overflowing. Most honda engines have a metal sediment bowl under the fuel selector. Remove the sediment bowl and dump the contents. Check fuel flow again.
- Carb. With the float bowl removed fuel selector ON check fuel flow again by holding a spray paint can lid under the float. It must fill up in about 10 seconds to the point your worried about over-filling the lid. If you do not have a good flow rate here the float needle float needle rubber seat and the fuel manifold are the prime suspects.

I know this generator has the Honda GX270 engine. Some have solenoids (Item 49 this link)
http://www.boats.net/parts/search/Honda/Engine/0/GX270%20VPX5%20ENGINE,%20JPN,%20VIN%23%20GCAB-2000001%20TO%20GCAB-9999999/CARBURETOR%20(2)/parts.html
^- No details!

Honda engines by model and VIN can be found here:
http://www.boats.net/parts/search/Honda/Engine/0/parts.html

At this time I think the low oil level sensor (sending uint) may be the culprit causing your problem.
Item 2 this link:
http://www.boats.net/parts/search/Honda/Engine/0/GX270%20VPX5%20ENGINE%2C%20JPN%2C%20VIN%23%20GCAB-2000001%20TO%20GCAB-9999999/CYLINDER/parts.html

Thanks for choosing FixYa,
Kelly



Sep 16, 2011 | Electrical Supplies

2 Answers

Have a Honda EM5000S generator issue. Will start easily, run for a few seconds, then cut off. Problem just started. Checked spark plug, air filter, fuel line. All fine. Any ideas would be appreciated.


I sounds like it might be the low oil shut off. it has a bypass that allows it to start but then cuts off after a few seconds. even if the oil is fine the sensor may be bad.

Aug 10, 2011 | Mi T M MiTM 6000 Watt 13hp Honda generator

1 Answer

WHEN IT IS PUT UNDER A LOAD IT WILL NOT STAY RUNNING UNLESS YOU LEAVE THE CHOKE ON


Possible that the engine is not getting sufficient fuel for running and so the choke action is needed. You need to check if the oil switch is cutting off the power, - if so replace oil.
Secondly the fuel settings might need a check up. You might need to clean/reset the plugs/spark gaps and also overhaul the carburator to solve this issue.

Jul 08, 2011 | Honda Electrical Supplies

1 Answer

Could low oil stop it from starting


Honda power products (generators specifically) are designed to shut down when low on oil. Adding as little as a tablespoon of oil will allow them to run again. It is possible that they could put this system in a motorcycle. But it is normally only used in stationary engines. Try new plugs. If the plugs are wet you may have just wet fouled them.

Nov 01, 2010 | Honda VTX 1800 Motorcycles

1 Answer

I have a Honda 7000 EM inverter generator. When it starts after a few seconds the overload light comes on and it shuts down. What is the problem?


ARE SURE ITS THE OVERLOAD LIGHT AND NOT THE NOIL ALERT? IF ITS THE OIL ALERT ITS CAUSE YOUR LOW ON OIL OR THE SENSOR INSIDE THE GENERATER IS BAD?

Sep 09, 2009 | Honda Electrical Supplies

1 Answer

Northstar generator w/GX620 engine shutting down


I been using gen for over 20 years on my farm as backup for my solar system and one issue the haeds...many users forget or no one tells them that they need to adjust the heads after every 40-50- hours and any changes in the setting will not allow the grn to start ot it will run for a few seconds than die...look for the exact seerting of the in and out and check tghem and see if that help...good luck. remmber in winter you need low grade oil not high or use synthatic better.

Sep 09, 2009 | Northstar Generator 20 Hp, 13,000 Watt,...

1 Answer

Generator won't run


DId you change the oil filter when you changed the oil I am assuming it has one.

If it has a filter some of them have a check valve in side and this valve may not be operating properly.Also you might try rolling it over a few times with the pressure sensor removed and see if oil spurts out the opening. If so then the problem may be the oil pump not building up oil pressure, or the motor may have a board looking for the oil pressure sensor to close (or open depending on how its engineered) and the sensor board is not working properly or not grounded good. Try cleaning the battery cables just in case (assuming it ahs a battery).

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