| Onan Choke Issue [message #277917] |
Sat, 16 May 2015 15:10  |
jtfred
Messages: 132
Registered: January 2015
Location: Grand Marais, MN
Karma: 0
|
Senior Member |
|
|
I'm having an issue with choke on my onan. When the starter is engaged, the choke closes, but when the engine catches, and the starter is released the choke goes back to full open and the engine dies. To keep it running I have to manually hold it open to keep it running.
Is there something that I can do to test the choke and adjust it? I think I read that there is a bimetal strip in the choke that should hold it partially closed when cold and open the choke as it warms up. It seems like that may be where the issue is.
It worked fine last week. I have since had a muffler installed. I am wondering if welding on the exhaust pipe could have damaged the bimetal strip. If that is the case, would it be possible to re adjust the bimetal strip.
Thanks for your help,
John
Fayetteville, GA
1978 Eleganza
John Fredrikson
Grand Marais, MN
1978 Eleganza
|
|
|
|
| Re: Onan Choke Issue [message #277927 is a reply to message #277917] |
Sat, 16 May 2015 17:58  |
jtfred
Messages: 132
Registered: January 2015
Location: Grand Marais, MN
Karma: 0
|
Senior Member |
|
|
I richened the carb a half a turn to compensate. It seems to be working now. I will test again tomorrow to see if it will start from cold on its own.
John
John Fredrikson
Grand Marais, MN
1978 Eleganza
|
|
|
|
| Re: Onan Choke Issue [message #277941 is a reply to message #277927] |
Sat, 16 May 2015 23:00 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
jtfred wrote on Sat, 16 May 2015 16:58I richened the carb a half a turn to compensate. It seems to be working now. I will test again tomorrow to see if it will start from cold on its own.
John
I think you have it right. The choke only comes on when starting and the bimetallic spring will decide how far it will come on--only when actuated during start.
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
| Re: Onan Choke Issue [message #278013 is a reply to message #277917] |
Mon, 18 May 2015 19:54 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
|
Senior Member |
|
|
I think Bob has it right. A simple system but a bit of difficult logic to wrap your head around. Unless you used to drive an old slant 6 from whence Onan borrowed the actuator I believe.
John Lebetski
Woodstock, IL
77 Eleganza II
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
