WD45 Motor Surging
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=131391
Printed Date: 23 May 2025 at 1:20am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD45 Motor Surging
Posted By: rustyorange45
Subject: WD45 Motor Surging
Date Posted: 15 Nov 2016 at 6:17pm
My WD45 is surging. I rebuilt the carburetor and it starts easier and idles better, but it surges at full throttle and I have to pull the choke out to keep it running. Carburetor, ignition, or governor? It was doing this before the carburetor rebuild as well.
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1953 WD45 WF/Model 90 Loader, Oxnard Rear Blade, 80R Mower, Model 209 Disc, WD Rear Mounted Scoop, Model 184 & 160 Rotary Mowers, 1952 CA NF/L306CA mower, 1953 CA WF/Model 8 Loader.
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Replies:
Posted By: Dnoym N. S. Can.
Date Posted: 15 Nov 2016 at 6:26pm
Carburetor, intake ,intake gasket , or carb gasket
or poor gas flow out of the tank /filter /screen
B:-) Dnoym
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Posted By: CrestonM
Date Posted: 15 Nov 2016 at 6:29pm
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My G used to surge. A 2nd governor spring fixed it. It's not a big spring, a small one about as big around as a pencil, and a couple inches long. It doesn't take much tension to pull it, but it worked!
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Posted By: Eric B
Date Posted: 15 Nov 2016 at 6:44pm
Do you have generous flow out of the bottom of the carb if you pull the plug. On my WD I had restriction in fuel shut off above the glass cup. Once all cleaned...back to full power.
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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Posted By: Chalmersbob
Date Posted: 15 Nov 2016 at 9:37pm
If you have to pull the choke out to keep it running good, you are starving for fuel. Need to check fuel flow to and through the carb. Remove the plug or the main needle valve from the bottom of the carb and check fuel flow there. Let the fuel run for several minutes and see if it maintains a constant flow. Bob
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4 B's, 1 C's,3 CA's, 2 G's WD, D14, D15, B-1, B10, B12, 712S,
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