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| Crawlers, Dozers, Loaders & Backhoes Discussion Forum |
Topic: Re: VF4 Wisconsin vacuum
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| ErnieD
12-20-2012 09:34:49
184.153.103.206
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I suspect a sticking intake valve. Old gas will varnish the intake valve stems. More pronounced on aircooled engines. When the engine is idling fog some penetrating oil in the intake or some 2 cycle mix for fuel.
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| Duner Wi
12-20-2012 10:27:31
216.226.80.242
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Re: VF4 Wisconsin vacuum in reply to ErnieD, 12-20-2012 09:34:49
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| I thought the same thing about sticky vales so I have been running engine out of 1 QT gas container. Pumped marvel Mystery Oil thru the intake with engine running, Same oil in the gas.
Removed the valve adjusting covers and oiled valve stems and springs with pump oil can with engine running. Same deal ,nothing changed. Still would like to know if uneven fire/odd fire Wisconsin can have a even vacuum reading at 500/600RPM?
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