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Wisconsin Engines Single cylinder up to V4 engines.

Wisconsin Engines

Wisconsin Engine VH4D Running Rich


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Old 09-15-2018, 12:14:36 PM
Jason Blixrud Jason Blixrud is offline
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Default Wisconsin Engine VH4D Running Rich

New to this site. Have a Wisconsin engine in a Bobcat M700. Runs rich after about 1 he to1 1/2 hours of running. Carb cleaned and rebuilt at dealership...I am an everything else guy not a carb guy. Timed, all new cap rotor plugs condenser, etc. Replaced fuel cap. Covered fuel lines with 2 types of heat insulation in case it was a vapor locking issue. Still same result. It has an electric fuel pump. Could it need a regulator to make sure fuel pressure stays at about 3 psi. Or should I do a compression check first..help please thank you
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Old 09-15-2018, 05:31:59 PM
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Craig A Craig A is offline
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Default Re: Wisconsin engine Vh4d running Rich

Welcome to STAK Jason...….

I moved your thread to this forum so you'll get some suggestions.
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Old 09-16-2018, 04:29:16 PM
I like oldstuff I like oldstuff is offline
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Default Re: Wisconsin engine Vh4d running Rich

Is it making black smoke from the over rich flooding condition?
When it is running rich next time, shut it off and pull a spark plug. Is the center insulator black or very dark brown?
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Old 09-16-2018, 04:49:05 PM
DCamp DCamp is offline
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Default Re: Wisconsin engine Vh4d running Rich

If you are running the engine to slow it could overheat. Mine sometimes will do that in hot weather so I add a little diesel to give it extra lube.
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