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Old 06-18-2002, 09:28 AM
bruces bruces is offline
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Location: Independence, MO
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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?

Thanks.
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  #2  
Old 06-18-2002, 01:41 PM
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Robert Doubrava Robert Doubrava is offline
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I would think you should check the governor linkage.:blob3:
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Old 06-18-2002, 06:09 PM
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Bob Minney Bob Minney is offline
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first thing I thought of too-governor linkage
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Old 06-18-2002, 09:21 PM
Tony Harrell Tony Harrell is offline
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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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  #5  
Old 06-20-2002, 01:14 AM
khouse khouse is offline
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it could be too lean. have you tried backing the main jet needle out? loose linkage can cause problems also.
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  #6  
Old 06-20-2002, 06:17 PM
grasmo grasmo is offline
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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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