Question about Generac Guardian Quietsource 25,000 Watt Liquid Cooled Standby Generator

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25 k natural gas generator will not stay running with air cleaner

Will start at first then once warmed up it will not start again. remove the top of the air cleaner and it starts fine.

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  • mike308 May 20, 2009

    yes it is

  • mike308 May 21, 2009

    There are no screws on the carburetor however there is throttle arm on the inner side with adjustment screws.

  • mike308 May 21, 2009

    No sorry no part number, I will get it im heading back to the house tomorrow. There are no blue or red covers on the carb.

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Yes

Posted on Nov 12, 2014

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I'm sorry I see that your generator is Nat gas; is it carbreted?

Posted on May 20, 2009

  • Jim Goldsmith
    Jim Goldsmith May 20, 2009

    Adjust your carburetor jet screws all the way out remember the number of turns (so you can return them to the old setting if needed) then: count the turns clockwise in until the screws bottom then: counting the turns back them out: counterclockwise 1/2 as many turns eachas it took to bottom them. this is the "normal adjustment and, the engine should start unless the floats or, the gas blend regulator are not allowing fuel in. LP gas can and, does easily vaporlock do to heat so; also check the fuel line/filter system

  • Jim Goldsmith
    Jim Goldsmith May 21, 2009

    Those are only the idle set screws are there any red or, blue plastic covers at the carburetor base...Do you have a name part# for the carburetor I can look up?

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My Ryobi 3500 generator starts but will not run


I've found this vid helpful:
https://www.youtube.com/watch?v=5AKKuuXUM6I

* check and clean out air filter.
* drain out old fuel from lines around on/off fuel valve.
* You may need to drain and force flush out fuel filter (I used the carborator cleaner to force out water in filter.)
* re-assemble fuel lines and clamp.
* pull out choke lever to full choke.
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* Turn on switches to ready generator for start up.
* Try several times to start.
* If it won't start then spray in carborator cleaner or Generator start spay into the air intake (with air filter sponge removed. Just a short burst is needed.
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* Pull at least 3 times before spraying any additional cleaner to prevent flooding.
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* try spray starting method again.
* if your still having problems (with not turning over at all) then you will have to take it to a small engine shop or contact the vendor for service. Check your warranty.
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1 Answer

It will crank and run good for 10 minutes and shut off. Once it shuts off when you restart it, it will only run for a couple of minutes and shut off again ?


I would start by getting a can of carburetor cleaner and have it 'at the ready' and try the 'start, run stall, start run stall' operation again. Only THIS time, once the engine begins to stall, give it a couple of quick shots of the cleaner into the air filter to see if it stays running on the cleaner.

If it does, then it's still a fuel problem. If it doesn't, then it probably an ignition problem. I would be sort of leaning towards the ignition coil getting weak. The reason I'm saying that is your statement about it running (I'm assuming cold start) for at first, 10 minutes then it stalls. Start it again and it runs for a couple of minutes and stalls again.

This could possibly be from the coil getting warm/hot and not producing the needed spark. After a 10 minute run it simply gets too hot and stalls the engine. After the next restart, the coil is already warm from the engine and so it don't take as long for the coil to get hot and stall the engine again.

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i took off the carb, dissasembled it and blasted it out with tb cleaner, took out the jets too, put it all back and it still does the same thing. it is getting fuel but it won't run.

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