Question about Generac 5622R GP5000 GP Series 5000 Watt Portable Generator

1 Answer

My Generac GP5000 generator runs great for about 4 minutes until it heats up then it starts cutting out and backfiring until it ultimately dies and wont restart until it cools down. the generator has less than 8hrs on it. I hope somebody can tell me why this is happening if not i have an expensive boat anchor.

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  • Master
  • 512 Answers

If it is new and under warranty, talk to Generac about getting it fixed.

If it is old and unused, it probably needs fuel system cleaned out. Carb needs to be removed and cleaned inside and out, fuel lines need flushing, filter changed and if it has an automatic choke, it needs to be checked because it sounds like it is stuck on.

Posted on Oct 08, 2012

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6 Suggested Answers

6ya6ya

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  • 2 Answers

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Posted on Jan 02, 2017

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RSG000

  • 26 Answers

SOURCE: Generac 4456 does not start on power loss

I install and work on these everyday. If you hooked up the transfer switch you probable have a control wire wrong. check the utility power sense wire. That lets it no when to start in auto. it could be a relay or fuses. or a control board.

Posted on Jul 09, 2009

Anonymous

  • 10 Answers

SOURCE: I have a 17kw generac generator that will run

I have the 18KW model and was told that most alarms relate to a low battery. Make sure the battery charger in the Transfer Switch is properly feeding the battery or hook up a mobil battery charger to the battery and see if the alarm goes away. Good Luck.

Posted on Oct 12, 2009

Anonymous

  • 33 Answers

SOURCE: Generac control wires

older model Generac only haver 4 control wires:
N1
N2
23
194
if it is the included wiring harness the wires should have their numbers stamped on the jacketing and a sticker should designate the proper screw to mount it to in both the ATS and the generator housing. hooking these wires up incorrectly often results in blown fuses and/or damage to the control board in the generator.

Posted on Dec 01, 2009

guarionex

  • 1 Answer

SOURCE: Generac generator will start, run for a moment and

Its the Oil sensor just pack the oil sensor wires together with a smal screw and bolt and try starting if it starts your problem is the oil sensor they tend to go bad I have run through several myself . To avoid hassles I now have overidden the sensor but I check the oil level everytime I need to use the generator

Posted on Sep 03, 2010

ftw1952

frank thomas wilson

  • 10319 Answers

SOURCE: I have a Generac generator

clean the orfice in the output valve and try again

Posted on Apr 13, 2011

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