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Onan genset model #5.0 CCK stops running ater 10 or 20 min


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  #1  
Old 04-22-2011, 06:44:49 PM
M.Linskens M.Linskens is offline
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Question Onan genset model #5.0 CCK stops running ater 10 or 20 min

first time to post , look at alot of other post but havn't fond this one. it seems the more power i need from it ,it starts to spudder and die thanks.
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Old 04-22-2011, 07:02:07 PM
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

when it stops will it start right back up and run for 10 to 20 min?

Do you have to wait a certain amount of time before it will start and run again?

When you restart it does the run time stay constant 10 to 20 min or does it get shorter and shorter each time you restart it?

does it run ok without any load or does this problem just occurs when you add load to the genset ?

have you unpluged one plug wire and run the genset then plug it in and unplug the other and try to run it to see if you have a dead cylinder?
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Old 04-22-2011, 07:17:20 PM
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Talking Re: onan gen set model #5.0cck stops running ater 10 or 20 min

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Originally Posted by kg5388 View Post
have you unpluged one plug wire and run the genset then plug it in and unplug the other and try to run it to see if you have a dead cylinder?
This is NOT Possible to do on a Standard Onan CCK Factory wired Ignition System. Simply because, the Spark Plugs are wired in series. So if you unplug a Spark Plug, and do NOT Ground that Spark Plug Wire, the remaining Spark Plug can't fire, because it no longer has a Path to Ground, thru the Coil, as the Coil Secondary is NOT Grounded, internally like a Car Coil. Onan CCK coils are more like Harley Davidson Twin Tower Coils, which are sometimes used to replace Onan coils on the CCK Gensets.

http://www.smokstak.com/forum/showthread.php?t=56022
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Old 04-22-2011, 07:28:35 PM
M.Linskens M.Linskens is offline
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

seems that if i don't put a load it runs longer . i took the low oil wire of the coil but still happens thanks for any info
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Old 04-22-2011, 07:44:39 PM
kg5388 kg5388 is offline
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

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This is NOT Possible to do on a Standard Onan CCK Factory wired Ignition System.
DOH!! my mistake it's been long day and tried to ask the basic questions quickly without thinking CCK
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Old 04-22-2011, 07:49:51 PM
M.Linskens M.Linskens is offline
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

hey thats ok, time for a beer !
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Old 04-22-2011, 08:14:58 PM
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

question I forgot and it is one of the important ones

Does it surge up and down like it's running out of gas or does it shut down like you hit the stop switch?
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Old 04-22-2011, 08:20:54 PM
M.Linskens M.Linskens is offline
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

well it spudders an pops then stops . i have it hook up to a 5 gal tank an its out of the rv thanks
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Old 04-22-2011, 08:32:38 PM
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

Could be a simple as a bad condenser...
I would do the cheap / easy stuff first: Points, plugs, condenser. See if that makes any diference and then consider the more expensive items.
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Old 04-22-2011, 08:38:20 PM
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Default Re: onan gen set model #5.0cck stops running ater 10 or 20 min

thanks i'll try that an let you know if its the fix .
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Old 04-22-2011, 09:34:33 PM
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Default Re: Onan genset model #5.0 CCK stops running ater 10 or 20 min

If this problems after the engine is warm but not when first started. A couple of things come to mind. Choke or valve adjustment. If its hard to start after its warm check valve clearance.
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Old 04-22-2011, 10:01:19 PM
Max Thompson Max Thompson is offline
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Default Re: Onan genset model #5.0 CCK stops running ater 10 or 20 min

I am real good at asking the stupid questions. What type of tank are you using & is it vented?
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Old 04-23-2011, 12:30:41 PM
M.Linskens M.Linskens is offline
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Default Re: Onan genset model #5.0 CCK stops running ater 10 or 20 min

it starts up after it shuts off , i'll take a look at the choke thanks

5 gal. gas tank vented , the only stupid question is one thats never ask thanks
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Old 04-25-2011, 11:43:32 AM
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Smile Re: Onan genset model #5.0 CCK stops running ater 10 or 20 min

Improperly set points gap will cause similar problems. Points gap is "acceptable" when unit is cold, but closes (or opens)when unit heats up until the points don't function. A tune-up (new points and condenser) never hurts anything.
Dave Edmonds
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Old 04-26-2011, 03:04:08 PM
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Default Re: Onan genset model #5.0 CCK stops running ater 10 or 20 min

thanks thats what i'm going to try , do you know the gap thanks again
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Old 04-26-2011, 07:52:35 PM
Ben Cowan Ben Cowan is offline
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Default Re: Onan genset model #5.0 CCK stops running ater 10 or 20 min

I believe most cck units use a point gap of 0.020 inches, 20 thousands of an inch. Luck, Ben
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