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  #1  
Old 08-15-2018, 12:04 AM
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Jermechanic Jermechanic is offline
 
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Default Ellison Throttle Body

My friend has an Ellison throttle body on his 160hp o-320. After 1700hrs of good service he is now having difficulty starting hot.

Has anyone had their Ellison apart for repairs? Apparently their is a replaceable diaphragm that can cause this issue.

As another idea would anyone have an Ellison they would part with. Its a terrible time of the year to have his RV4 out of service

Thanks
Jeremy
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  #2  
Old 08-15-2018, 04:34 AM
Mark33 Mark33 is offline
 
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Location: Baton Rouge, La.
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I think his best bet would be to send it back in to Ellison for a rebuild. They can be a little hard to reach by email but if you call and leave a message they’ll usually return your call pretty quickly. If you don’t hear back from them just keep trying and you’ll eventually be able to get in touch with them. http://ellison-fluid-systems.com

Mark
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  #3  
Old 08-15-2018, 06:46 AM
mvs163 mvs163 is offline
 
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Location: Southern Ontario
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I've had a few Ellisons, not sure how the diaphram would cause a hot start issue only...
I think the diaphragm is a Tillotson (sp) part.
I have a brand new unit if your friend wants to replace, I'm in Canada, no customs/brokerage, shoot me a PM.
Mike
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  #4  
Old 08-15-2018, 07:13 AM
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rocketbob rocketbob is offline
 
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Unless the diaphragm is torn or if the rubber has gotten hard or stretched, I would not suspect the diaphragm. Otherwise they are easy to replace and at least you can eliminate it when troubleshooting. Tillotson DG-1HD is the part #.
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  #5  
Old 08-15-2018, 09:39 AM
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Jermechanic Jermechanic is offline
 
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Default PM Sent

PM Sent regarding the Ellison throttle body

Quote:
Originally Posted by mvs163 View Post
I've had a few Ellisons, not sure how the diaphram would cause a hot start issue only...
I think the diaphragm is a Tillotson (sp) part.
I have a brand new unit if your friend wants to replace, I'm in Canada, no customs/brokerage, shoot me a PM.
Mike
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  #6  
Old 08-15-2018, 10:13 AM
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If not already tried, Ellison recommends shutting down with mags, not mixture, for easier hot starts.
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  #7  
Old 08-20-2018, 08:28 PM
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Jermechanic Jermechanic is offline
 
Join Date: Oct 2007
Location: Victoria, BC
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Default Thank you

Thank you for all the responses regarding the 0-320 hot start issue. The problem was being masked by priming while cranking which somewhat helped and mistakenly pointed to the fuel injector.

On further diagnosis a weak/bad impulse coupler was found to be the problem. A replacement Slick mag was installed and the engine starts great now.

~Jeremy
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