Yamaha EF2400iS Generator

[Bigfoot Mike]

You might ask the guy if it's possible to borrow another generator like yours to take to altitude and test -- That would go a long way towards letting you both know if the problem is only your generator or the whole series.

I don't see how I could travel to a high enough altitude to test it. (I doubt they would lone one to me either.)

[Darwin Maring]

Is it now working at your low altitude?

[Bigfoot Mike]

Is it now working at your low altitude?

YEP, everything works fine here. Hard to make a case that it wasn’t working when I needed it.

[Kurt & Ann K.]

Mike,
Since it works at sea level, I suspect the "altitude sickness" diagnosis is correct.
Have you received the high altitude jet yet? I'm curious to know the number designations of both the original and the new one. If there is another number between them, that might work at both sea level and at high altitude. Kind of a mid-range compromise.
The numbers usually reference number sequence drill bit sizes. The smallest orifices are smaller than a human hair.

Thanks for sharing the updates on this unfolding saga.
Kurt & Ann K.

[Bigfoot Mike]

The new one I got is Part #1HX-1423E-30-00.

I don’t know what the original part number is.

[Kurt & Ann K.]

Mike,
Most gas orifices have a one or two digit number stamped right into the (usually) brass or aluminum body. The number corresponds to a numbered drill bit size, #1 is .2280" and a #80 is .0135".
Maybe your new one is a #30.
My experience has been with gas furnaces and ranges using natural gas or propane. I'm curious about internal combustion engines using those fuels, so your experiences are of interest.
Thanks again for sharing.

Nice picture of your rig! Are you trying to maintain a schedule while you are traveling? Earlier this year Ann and I were on the road for 6 weeks and added 3700 miles to our rig. The only date on the calendar was a family wedding near home on the same Saturday as Bandon. Having 2 months of freedom was an entirely new experience for us. Ultimately, the high cost of fuel and the Calif. fires changed our route somewhat but we had a great time.

Hope you two continue to contribute about your travels!
Kurt & Ann K.

[Bigfoot Mike]

Some how I seemed to have confused people. I am not retired yet. This trip was a 2+ week vacation. It gave us a chance to really test our equipment.

I have a Yamaha guy that has taken an interest in my generator problems. He sent to me a shop chart showing what jets the current generators use at different altitudes for these gasoline inverter generators.

Here is what they are:

Yamaha's High Altitude Jetting Chart for EF2400iS

Altitude - Jet for the EF2400iS

Sea Level - 1HX-1423E-34-00 (standard)

6000' - 1HX-1423E-67-00

9000' - 1HX-1423E-31-00

12000' - 1HX-1423E-66-00

(note: there is a 3% loss in horse power per 1000' elevation)

[JMoreno]

Some thing is wrong somewhere ! I have had my 2400 for two years (heavy usage ) .It will run the AC/micro and all the lights at one time ,no problem .

We have had our EF2400is for two years also, and it runs A/C and everything else in our RV with no problem.
We have no complaints with the Yamaha