I live in Phoenix and my generator starts up really good with no choke. Was in Dolores, CO over the weekend and could not get it to start at all. Used premium gas, no choke then choke....still no start. I also added a little sea foam. Nothing. Go back home and it started right up.Was going to pull the carb and give it a cleaning...but could this issue be something else. Do I need a new main jet for higher altitude? I seen lots of people with this generator with the stock jet run fine in higher altitude.Thanks for the help.

aaarneson wrote:Do I need a new main jet for higher altitude?Over 5000' Honda would say yes - ergo the reason Honda does offer different jets for the EU2000i.

I would not think that altitude would be a problem. I see DOLORES CO Elevation is 6,936?. Maybe you was at a higher elevation close by the town you listed.I have run my 2kw Honda Generator here with no problems up and down the Blue Ridge Parkway with no issues... I'm pretty sure I have used it in areas at least that high in elevation. I believe our elevation here in King George is 56' haha...Who knows I guess as everything seems to have minds of their own haha...Maybe you can find some info in the generator specs about this...ADDED NOTE: My Honda EU2000i manauls states this about Higher Elevation..."HIGH ALTITUDE OPERATIONAt high altitude, the standard carburetor air/fuel mixture will be toorich. Performance will decrease, and fuel consumption will increase. Avery rich mixture will also foul the spark plug and cause hard starting. Operation at an altitude that differs from that at which this engine was certified, for extended periods of time, may increase emissions.High altitude performance can be improved by specific modificationsto the carburetor. If you always operate your generator at altitudesabove 5,000 feet (1,500 meters), have your servicing dealer performthis carburetor modification. This engine, when operated at highaltitude with the carburetor modifications for high altitude use, willmeet each emission standard throughout its useful life.Even with carburetor modification, engine horsepower will decreaseabout 3.5% for each 1,000-foot (300-meter) increase in altitude. The effect of altitude on horsepower will be greater than this if no carburetor modification is made.When the carburetor has been modified for high altitude operation,the air/fuel mixture will be too lean for low altitude use. Operation at altitudes below 5,000 feet (1,500 meters) with a modified carburetor may cause the engine to overheat and result in serious engine damage.For use at low altitudes, have your servicing dealer return thecarburetor to original factory specifications."Roy Ken

RoyB wrote:Maybe you can find some info in the generator specs about this...Roy KenPage 27 of the owner's manual..which I see you already quoted.

RoyB wrote:Maybe you can find some info in the generator specs about this...Roy Ken2oldman wrote:Page 27 of the owner's manual..which I see you already quoted.HIGH ALTITUDE OPERATIONAt high altitude, the standard carburetor air/fuel mixture will be too rich. Performance will decrease, and fuel consumption will increase. A very rich mixture will also foul the spark plug and cause hard starting. Operation at an altitude that differs from that at which this engine was certified, for extended periods of time, may increase emissions.High altitude performance can be improved by specific modifications to the carburetor. If you always operate your generator at altitudes above 5,000 feet (1,500 meters), have your servicing dealer perform this carburetor modification. This engine, when operated at high altitude with the carburetor modifications for high altitude use, will meet each emission standard throughout its useful life.Even with carburetor modification, engine horsepower will decrease about 3.5% for each 1,000-foot (300-meter) increase in altitude. The ef- fect of altitude on horsepower will be greater than this if no carburetor modification is made.When the carburetor has been modified for high altitude operation, the air/fuel mixture will be too lean for low altitude use. Operation at altitudes below 5,000 feet (1,500 meters) with a modified carburetor may cause the engine to overheat and result in serious engine damage. For use at low altitudes, have your servicing dealer return the carburetor to original factory specifications.

2oldman - Looks like we both went to the manual at the same time haha... I know I have used mine higher than 5000' with no problems...Roy Ken

Honda EU2000I Not starting at higher altitude | Good Sam Community

29 Replies

Semperfi_66
Explorer
Jul 07, 2016
I change the jets as I change elevations. You tube has many videos how to do it. Also a shot of starting fluid gets it going. I have a 5500 but use the Honda when dry camping and don't need the big boy
SoundGuy
Explorer
Jul 07, 2016
Honda Generators - High Elevation Operation
2oldman
Explorer II
Jul 07, 2016
RoyB wrote:
2oldman - Looks like we both went to the manual at the same time haha...
When all else fails...
aaarneson
Explorer
Jul 07, 2016
Thanks guys...I think I will just order the 6k-10k main jet.
RoyB
Explorer II
Jul 07, 2016
2oldman - Looks like we both went to the manual at the same time haha... I know I have used mine higher than 5000' with no problems...

Roy Ken
SoundGuy
Explorer
Jul 07, 2016
RoyB wrote:
Maybe you can find some info in the generator specs about this...Roy Ken

2oldman wrote:
Page 27 of the owner's manual..which I see you already quoted.

HIGH ALTITUDE OPERATION

At high altitude, the standard carburetor air/fuel mixture will be too rich. Performance will decrease, and fuel consumption will increase. A very rich mixture will also foul the spark plug and cause hard starting. Operation at an altitude that differs from that at which this engine was certified, for extended periods of time, may increase emissions.
High altitude performance can be improved by specific modifications to the carburetor. If you always operate your generator at altitudes above 5,000 feet (1,500 meters), have your servicing dealer perform this carburetor modification. This engine, when operated at high altitude with the carburetor modifications for high altitude use, will meet each emission standard throughout its useful life.
Even with carburetor modification, engine horsepower will decrease about 3.5% for each 1,000-foot (300-meter) increase in altitude. The ef- fect of altitude on horsepower will be greater than this if no carburetor modification is made.
When the carburetor has been modified for high altitude operation, the air/fuel mixture will be too lean for low altitude use. Operation at altitudes below 5,000 feet (1,500 meters) with a modified carburetor may cause the engine to overheat and result in serious engine damage. For use at low altitudes, have your servicing dealer return the carburetor to original factory specifications.
2oldman
Explorer II
Jul 07, 2016
RoyB wrote:
Maybe you can find some info in the generator specs about this...Roy Ken
Page 27 of the owner's manual..which I see you already quoted.
RoyB
Explorer II
Jul 07, 2016
I would not think that altitude would be a problem. I see DOLORES CO Elevation is 6,936?. Maybe you was at a higher elevation close by the town you listed.

I have run my 2kw Honda Generator here with no problems up and down the Blue Ridge Parkway with no issues... I'm pretty sure I have used it in areas at least that high in elevation. I believe our elevation here in King George is 56' haha...

Who knows I guess as everything seems to have minds of their own haha...

Maybe you can find some info in the generator specs about this...

ADDED NOTE: My Honda EU2000i manauls states this about Higher Elevation...

"HIGH ALTITUDE OPERATION

At high altitude, the standard carburetor air/fuel mixture will be too
rich. Performance will decrease, and fuel consumption will increase. A
very rich mixture will also foul the spark plug and cause hard starting. Operation at an altitude that differs from that at which this engine was certified, for extended periods of time, may increase emissions.

High altitude performance can be improved by specific modifications
to the carburetor. If you always operate your generator at altitudes
above 5,000 feet (1,500 meters), have your servicing dealer perform
this carburetor modification. This engine, when operated at high
altitude with the carburetor modifications for high altitude use, will
meet each emission standard throughout its useful life.

Even with carburetor modification, engine horsepower will decrease
about 3.5% for each 1,000-foot (300-meter) increase in altitude. The effect of altitude on horsepower will be greater than this if no carburetor modification is made.

When the carburetor has been modified for high altitude operation,
the air/fuel mixture will be too lean for low altitude use. Operation at altitudes below 5,000 feet (1,500 meters) with a modified carburetor may cause the engine to overheat and result in serious engine damage.

For use at low altitudes, have your servicing dealer return the
carburetor to original factory specifications."

Roy Ken
SoundGuy
Explorer
Jul 07, 2016
aaarneson wrote:
Do I need a new main jet for higher altitude?

Over 5000' Honda would say yes - ergo the reason Honda does offer different jets for the EU2000i.

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Honda EU2000I Not starting at higher altitude

29 Replies

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