Question about Generac Guardian Electrical Supplies

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I have an 07 guardian plus 12 kw generator I just bought used (standby) i just hooked it up and it will start for a second and then quits it's now hooked up on natrual gas checked oil level

So I'm sure its not the oil level removed the orfice for LP when I try to start in manual position it cranks fires then cycles pauses and cranks like its suppose to but won't even fire when leaving in that position, when I switch from the off back to manual it fires for a couple of seconds but only when i do it myself it fires it for just a couple of seconds then stops please help ASAP

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 120 Answers

SOURCE: generator back fires

Try changing the spark plug.

Posted on Jun 20, 2009

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  • 384 Answers

SOURCE: 10kw Generac Guardian not cranking, shows rpm sense loss

Sounds like Generator mode switch should be "ON".

Posted on Sep 08, 2009

  • 37 Answers

SOURCE: My Briggs and Stratton standby 7000w home

Check the battery voltage while cranking the engine if it drops below 9 VDC then you have a bad battery.

Posted on Nov 20, 2009

ftw1952
  • 10319 Answers

SOURCE: It is a Guardian-Generac Generator Model 0052410.

My cousin has one of these models and the same thing happened to his. It was the natural gas regulator valve that went out. He could hear the clicking noise which is the spark ignitor trying to ignite the gas pilot light. After replacing the gas regulator the unit work fine as ever

Posted on Nov 02, 2010

stewbison
  • 577 Answers

SOURCE: I have a guardian 15000 generator. Have not used

Hello, I tried to answer this problem you had a few days ago. You were worried the hurricane was come and your generator wouldn't start. I tried to post the answer but Quest has the slowest servers were work properly. To many customers and not updated servers. Anyway I hope this help you out.


First, replace the fuel filter. When taking out the fuel filter let the gas in the run into a can. This will help to remove any sediment in the fuel tank. Buy a couple of fuel filters. One problem is it where you live. Condensation builds up in the fuel tank and this create rust. When the hurricane is over. Remove the fuel tank, and have it cleaned out. Now, see if they can line the fuel tank inside with a plastic coating. This will stop the rust. Also, insert absorbents packs in the tank when the generator is idle. This will will help the moisture build up.


Second, change the oil and remove the oil pressure shut off sensor and clean it or replace it.
If it has a temperature sensor take it out and clean it. If it has a oil filter change it also.


Third, remove the spark and clean it or replace it. Make sure you have the right plug gap on the spark plug..

Fifth, use some carburetor cleaner and spray around the throttle place and choke plate and make sure that the governor arm to the carburetor is free to operate and everything in the carburetor is working freely.

Fourth, remove the air filter and clean it or replace it.

Sixth, remove all the fuel in the tank and filter the fuel with a couple pair of your wife's pantie hose.
Be really careful, gasoline is extremely explosive.

Seventh, remove the fitting from the tank and use compressed air to clean out the tank. You might think I'm going to far here. Once you think the tank is clean install all the brass fitting and hose and new filters and pour the filter gas back into the tank. as long as it is new gas, if it's fuel old depose of the old fuel.

Next, Never used starting fluid on gas engines. If you get to much starter fluid in the combustion camber it can explode and blow the head off or nock the top of piston off destroying the engine. You and your family be safe. GB you all....stewbison

Posted on Aug 27, 2011

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