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  #1  
Old 10-21-2009, 06:00 PM
jpooch00 jpooch00 is offline
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Question Auto compression release on ultra limited?

I think that I saw somewhere that the 103 motor on the Ultra Limited has an automatic compression release. If so, could somebody expalin how it works and if it's reliable or problem prone?

Thanks in advance.
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  #2  
Old 10-21-2009, 06:39 PM
RodFarmer RodFarmer is offline
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Page 7.22 of the 2010 Touring service manual says the ACR is opened and closed by the ecm to assist starting.
When open, compressed gasses are released through the exhaush port.
That's about all I can tell you
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Old 10-21-2009, 06:52 PM
88racing 88racing is offline
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They are suposedly better than what they used to be. But like the manual compression releases they to can get fouled with carbon debri. Somewhere in the manual it should state some servicing frequencies on them.
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Old 10-22-2009, 05:58 AM
jpooch00 jpooch00 is offline
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Thanks for the info!

Y'all ride safe,

John
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Old 10-22-2009, 09:09 AM
RodFarmer RodFarmer is offline
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Quote:
Originally Posted by 88racing View Post
They are suposedly better than what they used to be. But like the manual compression releases they to can get fouled with carbon debri. Somewhere in the manual it should state some servicing frequencies on them.
Good to know.
I'm not finding anything about servicing in the manual. They do show installation and removal.
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Old 10-22-2009, 10:12 AM
88racing 88racing is offline
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Quote:
Originally Posted by RodFarmer View Post
Good to know.
I'm not finding anything about servicing in the manual. They do show installation and removal.
Did some further research and I can't find a thing. Maybe there is no info on maintenance because they are located under the rocker box covers. Boy the MOCO didn't put them in a easily accessible spot for trouble shooting purposes or replacing.
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Old 10-23-2009, 09:31 AM
RodFarmer RodFarmer is offline
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Quote:
Originally Posted by jpooch00 View Post
I think that I saw somewhere that the 103 motor on the Ultra Limited has an automatic compression release. If so, could somebody expalin how it works and if it's reliable or problem prone?

Thanks in advance.

Page 146 in your owners manual says that the 103 and the 110 have ACR.
I know I replied to this thread already, but I happened to run accoss it looking for something else.
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