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bhaynes 
Silver Level
Joined: 23 Feb 2019
Location: Chattanooga, TN
Points: 105
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 Topic: `48 WD throttle help
Posted: 06 Jul 2019 at 7:25pm |
Hello again! :)
Well, I finally have it running. I think I will need a new carburetor, but it runs!
However, when I starts it doesn't seem to run 'smooth'. I noticed that while it is running, the throttle rod from the engine to the carburetor will move back and fourth on its own changing the throttle. If I keep it still, the engine seems to run smooth then. The throttle lever at the wheel will always stay in place, but the rod doesn't.
Is this the carburetor causing this? Or the governor part of it? Trying to work on this part now. LOL It runs, but won't stay running long.
Thanks again everybody! Hope everybody had a great fourth!
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Boss Man
Orange Level
Joined: 03 Mar 2018
Location: Greenleaf, WI
Points: 617
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Posted: 07 Jul 2019 at 7:45am |
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sounds like a governor issue
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22825
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Posted: 07 Jul 2019 at 8:34am |
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It could be just too much slop in the linkage from the gov to the carb. The CE engine had a hole in the throttle shaft for an "anti surge" spring. It is a real light weight tension spring the keeps pressure, pulling the throttle closed, so the governor can control the RPM.
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bhaynes
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Joined: 23 Feb 2019
Location: Chattanooga, TN
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Posted: 07 Jul 2019 at 9:39am |
Thanks CTucker - do you have a picture or a link to how it is supposed to be? I am missing a spring on this. I have a spring on the choke but can't remember where the other spring should be.
I have the manual, but it doesn't show that part. At least not that I can see.
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3912
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Posted: 07 Jul 2019 at 9:51am |
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surging also means a dirty carb , if you hold the govenor rod will the engine run at that rpm ? if its does then its gov.adjustment if not its carb cleaning and valve lash
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bhaynes
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Joined: 23 Feb 2019
Location: Chattanooga, TN
Points: 105
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Posted: 07 Jul 2019 at 3:22pm |
HudCo - Correct, if I hold the rod still, then the engine will idle smooth and "normal". (at least, it sounds like that way) If I let go, then it moves back and fourth on own and the engine sputters some.
If Gov. needs adjusted, how do I do that? and other then the choke spring on the carb, is there supposed to be another spring on the throttle?
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Hockeyman
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Joined: 31 May 2018
Location: Canada
Points: 41
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Posted: 07 Jul 2019 at 4:07pm |
Well if you ever do need to do a carb rebuild...
[TUBE]hVraAXnh5jk[/TUBE]
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22825
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Posted: 07 Jul 2019 at 5:40pm |
I don't think the WD ever had the anti surge spring like the C,B and CA. It could be added to help remove slop from the linkage though You could hook a tension spring in place of the cotter pin at the carb and run it forward to some anchor point. The CE engine had a small cross hole in the "LINK" pictured below. The spring ran up to a manifold stud toward the front of the engine. 
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bhaynes
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Joined: 23 Feb 2019
Location: Chattanooga, TN
Points: 105
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Posted: 07 Jul 2019 at 6:50pm |
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Thanks guys! I took the carburetor off and moved the throttle rod. There were two holes it could hook up too on the carb. a lower and upper. I moved it to the upper and its running smoother. still moves some, but better.
I think the gov. needs adjustment (however you do that) and still needs a new carb.
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