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Old 06-18-2002, 09:28 AM
bruces bruces is offline
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Join Date: Jun 2001
Location: Independence, MO
Posts: 648
Briggs 11hp surges

Just bought an old used Encore 32 w/ 11 hp Briggs.

When it is running, the engine surges under load. It is like I am moving the throttle back and forth. The rpms go up and down, I can see the throttle linkage moving.

Ideas? I have changed the fuel, the air filter appears to be clean, am going to change the plug.

What else should I check?

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Old 06-18-2002, 01:41 PM
Robert Doubrava's Avatar
Robert Doubrava Robert Doubrava is offline
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Join Date: Aug 2001
Location: Beeville, Texas
Posts: 342
I would think you should check the governor linkage.:blob3:
My truck:

1970 Chevrolet C20

My equipment:

1984 22" Yazoo BigWheel 5hp B&S I/C
1993 38" Craftsman rider 12.5hp B&S I/C
2004 Craftsman 17" gas weed-wacker
2004 Craftsman gas blower
1982 Trim-All edger 2hp B&S
1990's Stihl 009L, 14" bar
1964 McCulloch 250, 20" bar
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Old 06-18-2002, 06:09 PM
Bob Minney's Avatar
Bob Minney Bob Minney is offline
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Join Date: Jan 2002
Location: The Hottest driest city next to Hades - Denver Colorado
Posts: 1,094
first thing I thought of too-governor linkage
If you want people to notice your faults, start giving advice.
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Old 06-18-2002, 09:21 PM
Tony Harrell Tony Harrell is offline
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Join Date: Dec 2001
Location: Mount Airy,North Carolina
Posts: 739
Same here. I have a 12 hp that did that. I'd just fiddle with it and it would stop. It's sitting on the floor of my garage with a blown rod now. Better get someone who's QUALIFIED to work on it soon.
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Old 06-20-2002, 01:14 AM
khouse khouse is offline
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Join Date: Feb 2001
Location: lee's summit, mo
Posts: 1,476
it could be too lean. have you tried backing the main jet needle out? loose linkage can cause problems also.
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Old 06-20-2002, 06:17 PM
grasmo grasmo is offline
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Join Date: Jun 2002
Location: fl
Posts: 34
too lean is about the only thing that will cause hunting. if it does it at idle and at wot i would check the intake gaskets or anything related in the intake runner part (cracks etc.). if it only does it at wot it has to be the main jet. it is in the middle of the float bowl and goes straight up to the venturi. take some carb or brake cleaner and spray it through the bottom. look in the venturi while you hold the throttle valve open and see if it comes out.
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