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Old 07-26-2021, 02:44 PM   #1
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Generac won't stay running

1992 Mallard Generac. Engine starts and dies after 20 seconds Voltage to fuel pump while cranking. release start switch and lose voltage to pump. traced back to choke module. That appears to be the starting point for #14 wire. Diagram indicates that is fuel pump power wire. Any ideas greatly appreciated.
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Old 07-26-2021, 02:49 PM   #2
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Hi ! Welcome to IRV2! We're sure glad you joined us!

Hopefully our genny experts can help with that!

Good luck, happy trails, and God bless!
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Old 07-27-2021, 09:31 AM   #3
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So.. welcome to IRV2.. I don't have one.. never seen one.. just some basic test.. 1st with all safety precautions.. remove air filter and spray starting fluid into carb while cranking.. double check it starts.. 2nd.. you can bypass fuel pump positive and see if starts.. you can go on line a download some diagrams or hit Generac.. website site.. 3rd check for relays.. clean the connection at them.. they can get corroded.. 4th go on line Google choke module and see if any problems.. find out price.. if cheaper than shop .. buy it and try it.. if not it.. keep old one back for spares.. good luck and let us know what you did and maybe better members then me will help you oh.. just to let you know.. I have onan.. and I found on fuel line over the gas tank.. using cell phone with camera and flash and record up under frame.. critters chewed though lines .. usually when things go haywire... you must think about critters.. they find wires and lines tasty and chew on them all the time.. so carefully check each line for critters eating away at them..
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Old 07-27-2021, 09:41 AM   #4
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Just a thought, is it running off the same fuel as your motorhome? If so is your MH fuel below 1/2 to 1/4 tank? My Generac will stop running if my MH fuel tank is low.
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