Question about Hyundai HHD1250 1250W Portable Heavy Duty Generator

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Generator Surges when not under load. When you start the load it dies? What could this be?

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Troubleshooting generators


If this unit dies under load conditions, decrease your load and try it again.
If this happens under no-load conditions, check your fuel supply. Start with the filters, then check pressure and flow.

Jul 21, 2014 | Onan Cummins 4.0 KY-FA/26100 RV QG 4000...

1 Answer

Natural gas generator starts but surges under load


Install a pressure gauge at the gas inlet regualtor, conform it isn't less than specs normall 11-13" WC pressure. test this when it is surging, it sounds like fuel, or also incorrect governor gain setting

Jan 19, 2013 | Caterpillar CAT 150 KW Natural Gas Standby...

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Surges under load


A generator should normally surge under load.It is designed to do as a means of saving fuel while being able This increase energy supply when necessary.

Feb 13, 2011 | Electrical Supplies

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My generator doesn't idle, it serges continuasly. How do I adjust the govener and idel stop screw?


Don't fiddle with it. Put a load on it and see what happens. If it still surges, put a bigger load on it. If it still surges, seek professional repair for this product. You can do more damage to both the generator and what ever you poser if you do fiddle with it.

Aug 02, 2010 | Garden

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I have a 5.5 Vertical Briggs and Stratton about 6 years old that is mounted on a woodsplitter. This year it started dieing under load. It's driving a brand new 2 stage 11 gallon pump because I thought that...


If the generator was used during these 6 years continuously on full or near full load, it may have loosed compression (and derated load).

If you can measure the pump current and compare with the rated of the generator it should be less than the half of the rated to run properly in continuous mode. If it is greater than 75% it may be more than the possible for this generator.

Nevertheless the new fine oil, the overheating or lowering of the oil level during operation may be the reason for stopping.

Jul 06, 2010 | Briggs Stratton H7159 & StrattonĀ® 5500,...

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I have a Generac XL4000. It rill start but not run right.


If the area you live in has alcohol added to their unleaded gas, then you will probably need to rekit the carbuerator. Also check the spark arrestor for plugging up. Try to find a non alcohol, off road unleaded gas for your generator.

Jan 20, 2010 | Generac 13,000 Watt / 13,000 Watt Home...

1 Answer

Porter/Cable BS1525-w generator, starts always on the first pull, runs fine for an hour or more and then it dies out. Starts right away and it runs again for a while before it dies out again. No matter if...


Hello. I'm sure that you've checked your air filter, so check the pinhole vent on the fuel filler cap. Next time it dies, immediately crack the cap and listen for the sucking sound of air rushing into the tank. If you hear this, clean the cap!

Regards, --W/D--

Jul 23, 2009 | Porter Cable 3,500 Watt 6.5 Hp Portable...

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Coleman generator OHV3000


The carburetor is probably clogged up. Mix a bottle of carburetor cleaner with the gas to see if that would help. Also check/replace the fuel filter.

Sep 10, 2008 | Coleman Powermate Premium Plus 6250W...

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