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Guardian propane generator hard starting. At 20 F backfires and won`t start. Goes to overcrank.

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  • Guardian Expert
  • 573 Answers

It needs a cold weather option, one that heats the oil and also the carb so the LP gas does not freeze the carb. A common problem

Posted on Nov 17, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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CarlGehrke
  • 169 Answers

SOURCE: Generac Guardian 17.5KW Generator dies

If this is one of the big "taco cart" portables you need to check that the vent on the gas cap is open when you're running the engine. In the center of the gage on the gas cap is a little knurled knob, turn it counter clockwise (lefty loosey), about a half turn or so and run the generator.
If that doesn't solve your problem add to it here, otherwise please give me a rating I'm trying to build a little credibility here and could use the help.
Carl

Posted on Dec 02, 2008

mamicheddy
  • 79 Answers

SOURCE: guardian rv generator

Your control board is faulty. Try to power up the ingnition coil as well as your fuel pump. If this does not get the engine running then you have major engine problems.

Posted on May 19, 2009

  • 26 Answers

SOURCE: Attempted to start Generac Guardian 15 kw air

I work on these every day. Its either gonna be the rotor or stater, the voltage regulator, but most likely its a bad stepper motor which is the throttle motor, or control board. Thats all that could be causing that so its one of those. If its the rotor or stater thats bad it causes the generator to RPM up because it thinks its not producing enough power due to that. I had the same problem with the same one we just fixed and it was the slip rings on the end of the rotor so bad rotor.

Posted on Jul 09, 2009

  • 112 Answers

SOURCE: My generator runs automatically once a week. It

disconnect the battery and try again.

Posted on Nov 29, 2009

  • 37 Answers

SOURCE: natural gas generator will not start. 4 years after installation.

very likely a fuel problem. First pull the air cleaner cover off and try choking the engine by putting your hand over the intake partially choking it. If this don't work then go Down on the bottom right hand side behind the battery you will see a fuel regulator on top of it is a fuel solenoid with 2 wires coming off it. Below the fuel solenoid you will see 2 -1/4" pipe plugs one on top of the other. If you pull the top one out and gas comes out then you have fuel up to the solenoid. If you pull the bottom one out and crank the engine then you should get gas out of the bottom one. If you don't then make sure you are getting 12 vdc to those 2 wires during cranking. If you do then You are going to have to pull the 4 screws out of the solenoid and pull the solenoid off and make sure you the seat on your solenoid valve is not sticking. If all this checks out and you are getting fuel out both 1/4" pipe plug holes, then you will need to see if you have a spark at the spark plugs, if you don't then something is shorting out your ignition coils. Disconnect wire 18 from its terminal located above the oil cooler. If the engine starts and runs with this wire disconnected then you need to trace this wire back to the control panel and see whats causing it to ground out.

Let me know if this helps.

Posted on Dec 03, 2009

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Generator hard to start and sputters like its missing


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Why does it crank and almost start on 1st try?


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1 Answer

Honeywell 17KW generator error code 1100


You most likely have a fuel problem. Either not enough or too much pressure. What fuel are you using, propane or natural gas?

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1 Answer

It back fires


If it backfires, check for manifold leaks, fuel mixture is too lean, timing is off, make sure it isn't spitting liquid into the cylinders and the LP is the right pressure, and the vapour coil is working

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Generac 20,000kW Standby generator doesn't start shows message STOP ALARM OVERCRANKED


Overcrank means that it tried to start and couldn't. It will go through 5 crank cycles and then stop with this alarm. Switch to off, hit enter to clear fault and then try to start in manual. Check to make sure you have fuel and pressure is 11 to 14 in WC.

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1 Answer

Guardian rv generator


Your control board is faulty. Try to power up the ingnition coil as well as your fuel pump. If this does not get the engine running then you have major engine problems.

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2 Answers

Overcrank error message


The 'overcrank' error simply means it tried to start but never actually started. It cranked for an extended period. Check the fuel and starting issues you would normally check to start the engine.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

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1 Answer

Start runs shutsdown


Typically caused by the fuel line (LP or Natural Gas) having a lot of air in it. Was your generator just installed, or was there any work done to the gas line of the building / generator? Consult local gas contractor / propane dealer / gas company for assistance in purging the fuel line.

A low battery can also cause this as well as the generator is not able to come up to starting speed quick enough. Try placing a stand alone battery charger on the generator and charge the battery. Also check the air filter as well.

OverCrank condition occurs when generator tries to start itself, or be manually started, and the starter spends too much time turning.

This can also indicate failure of the control board. This will need the expertise of generac technician. Call 1-888-GENERAC (1-888-436-3722)
M-F 7am-6pm Central

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1 Answer

Have a 16k propane guardian generator have to manually start and


Is this an RV generator?

If you have to really choke an LP engine but it runs more or less normally once started you need to troubleshoot the demand regulator and the fuel supply lines (look for air leaks). I'd also check the fuel inlet pressure before the demand regulator.

Rate me,
Carl

Nov 19, 2008 | Guardian Rv Generator 4800 Watt, Gasoline,...

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