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Help, CCK Pumping Fuel From Carb


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  #1  
Old 02-09-2018, 09:07:53 AM
hertfordnc hertfordnc is offline
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Default Help, CCK Pumping Fuel From Carb

I spent the previous few weeks getting this thing running and it was working perfectly 2 days ago

this morning it was cold here and hard to get started

Then it would run until fuel gushed out of the top of the carb.

I could keep it running indefinitely by disconnecting and reconnecting the fuel pump wire.

So does that mean stuck carb float?

Any old mechanic tricks I can try short of taking the carb off?
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Old 02-09-2018, 09:19:43 AM
JohnnyC JohnnyC is online now
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Default Re: Help, CCK PUMPING FUEL FROM CARB

Float in carb may be stuck keeping the needle valve open. Try rapping on the float bowl with a large screw driver handle. Or drop the bowl and work the float free as well as cleaning out any crap from the ethanol gas that may have evaporated over the last 2 years.

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Old 02-09-2018, 10:14:51 AM
yellowlister yellowlister is offline
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Default Re: Help, CCK Pumping Fuel From Carb

Like Johnny said it's the needle.. I would remove the line to the carb and blow it out, replace the rubber line if its old as the tend to deteriorate inside and pump little peices of rubber into the carb.. add a inline fuel filter, and clean out the fuel pump filter on the bottom of the pump if its the original onan fuel pump

Most have a metal line from the fuel pump to the carb if yours is rubber id replace it just to avoid it from happening again
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Old 02-09-2018, 10:23:11 AM
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Billy J Shafer Billy J Shafer is offline
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Default Re: Help, CCK Pumping Fuel From Carb

There are many tricks that may work. For now. But the best way is to take it apart. Clean it out and if you have old rubber line. Replace it.
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Old 02-09-2018, 11:42:37 AM
hertfordnc hertfordnc is offline
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Default Re: Help, CCK Pumping Fuel From Carb

it fixed itself (sort of)
I had a feeling it was caused by the cold, ice in the carb so i ran it for a while by cycling the fuel pump, got the exhaust hot and the closed it up and left it.

An hour later it's working.

I'm thinking a little dry-gas might help.

thanks
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Old 02-09-2018, 12:29:27 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Help, CCK Pumping Fuel From Carb

A quick fix for carb flooding is to stop fuel from entering and run the carb dry. If trash gets caught in the needle the float will hold it there, it will continue flooding. Shutting fuel allows the float to drop, incoming fuel washes the trash out, you may have accomplished this unknowingly.
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Old 02-09-2018, 01:26:45 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: Help, CCK Pumping Fuel From Carb

I would take the fuel bowl off and check for debris or water. Pull the float and needle and make sure there is no more debris in the inlet. If there is water, it will sit in the bowl and corrode it. if you use E-10, it certainly will mix with the alky in the gas and cause 'white rust'. If it was a piece of crud, it may float around for a while, and eventually end up in the main jet or worse, into the smaller idle circuits.
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Old 02-09-2018, 02:05:10 PM
yellowlister yellowlister is offline
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Default Re: Help, CCK Pumping Fuel From Carb

Fixed for now comes to mind.. but when you need it, it will magicly not start..

Spend the time to fix it right and keep it in good shape, it it will take care of you as you do it... all it Will cost you is a little time, and you will be more familiar with your onan and know it's ready to go

Last edited by yellowlister; 02-09-2018 at 02:53:05 PM.
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Old 02-10-2018, 10:45:30 AM
hertfordnc hertfordnc is offline
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Default Re: Help, CCK Pumping Fuel From Carb

Quote:
Originally Posted by yellowlister View Post
Fixed for now comes to mind.. but when you need it, it will magicly not start..

Spend the time to fix it right and keep it in good shape, it it will take care of you as you do it... all it Will cost you is a little time, and you will be more familiar with your onan and know it's ready to go
We all make choices. Right not the generator is in a non-running motorhome parked at a vacant house on which i am losing $850 a month until i get it renovated and rented.

I love the Onan and the motorhome and as soon as this project is wrapped the motorhome will be towed home where i have a garage and electricity.
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