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New HONDA EU 7000is Issue

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botemon
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2023/05/02 08:40:33 (permalink)
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New HONDA EU 7000is Issue

Hi folks!
First off, I did attempt to contact Honda Technical support with my issue, but they only referred me to a dealer. I live in the Dominican Republic and there are no service centers here to my knowledge. So….I need some help from someone who may know! I am an electrical automation engineer that knows a little bit about a lot of stuff!!! HA!!
    I own a new HONDA EU 7000is generator. The generator (Gasoline only) has 80 hours of use. When I first started running the generator it gave us about 50 hours of perfect operation.
I changed the oil with the proper weight at the proper hours required of a new generator. I changed the oil again at about 70 hours of use. I have replaced the battery.
The problem is that the generator exhaust is very black (smoke) and I have replaced and / or cleaned) the spark plug 6, maybe 7 times because it gets dirty (full of carbon) quickly. (The spark plug is the correct one as described in the owner’s manual as well as the “gap” is set properly).
I checked the compression and it is where it should be.
I also cleaned the “spark arrestor” at the exhaust, and it was almost fully plugged with black carbon.
The only other thing I thought was of is the condition or the air filter. It is still perfectly clean, which surprised me. We live in a “semi dusty” area. The filter looks brand new!
 It won’t start anymore and just “belches” a thick cloud of black smoke. I have owned other generators, (diesel, gas and propane) marine and otherwise, and have not ever seen this issue before. I thought about the “lean mixture” not being correct, but I don’t think there is a way to adjust it. I also added some “injector cleaner” at around 60 hours with no kind of positive result.
There are two unrelated fault codes stored in the display. The generator ran out of gasoline and I think it produced a “low voltage” error. The other related to the battery.
So I am at a loss and looking for some support with this problem.
Thanks in advance for your thoughts and support!
Respectfully,
Ken

5 Replies Related Threads

    SRTsFZ6
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    Re: New HONDA EU 7000is Issue 2023/05/02 14:17:05 (permalink)
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    Sounds like your choke (if equipped) is stuck ON.  
     
    I looked up several parts diagrams for several versions of your machine but no carberator is shown.  (????)
     
    As it is probably is carbureted, I'd look for some sort of automatic choke butterfly and see if it's staying activated (choked)...
     
    Find your unit (towards the bottom): 
    https://www.jackssmallengines.com/jacks-parts-lookup/manufacturer/honda/generator 
     
     
     
    .
    espohonda
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    Re: New HONDA EU 7000is Issue 2023/07/21 15:40:28 (permalink)
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    Are you only running this on eco throttle only? If so you probably need combustion chamber cleaned. If ran on eco throttle a lot the combustion chamber will have quite a bit of carbon build up. Clean this out with combustion chamber cleaner sprayed into intake till the machine almost but does not shut down or you can remove your top end to full clean and rebuild. This is a fuel injected machine so no carb/choke issues are possible. 
     
    botemon
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    Re: New HONDA EU 7000is Issue 2023/07/22 20:24:17 (permalink)
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    Thanks for the replies. Sorry I have not replied sooner.  I was able to find the choke without too much difficulty. On top of the choke assembly, there is a “stepper motor” that controls the choke. It was free. (not stuck). So I was able to see (with a mirror) and move the choke while attempting to start it. It “huffed and puffed” blew smoke and I stopped at that point. Interesting about the “ECO mode” because that’s how I have ran it since the beginning. 70 hours. Nice feature…. I thought! Next I’ll take your advice with combustion chamber cleaner. SNIP>> you can remove your top end to full clean and rebuild.<< OH….I hope I don’t have to do that!! SNIP>>This is a fuel injected machine so no carb/choke issues are possible.<< “Make everything as simple as possible…but not simpler”. (Albert Einstine).  I’ll get back to it soon and report back. Muchas Gracius!
    SRTsFZ6
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    Re: New HONDA EU 7000is Issue 2023/07/25 08:18:29 (permalink)
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    The stepper motor, what exactly does it control?   A butterfly?
    botemon
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    Re: New HONDA EU 7000is Issue 2023/07/25 09:23:02 (permalink)
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    SNIP>>> The stepper motor, what exactly does it control?   A butterfly?
    Yes.
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