Posted by ccaissie on October 27, 2013 at 08:23:09 from (70.16.97.184):
My B-275 has a retrofitted Bosch VA injector pump which is worn, but runs ok at higher rpms.
After sitting for a couple months, I've started it, and it sticks wide open. I can regulate the speed by intermittently pulling the shutoff, but I cannot get it to idle or run normally.
I noticed it will do this if the fuel bowl valve is shutoff, and will immediately "come out of it" when the fuel valve is opened.
As an experiment, I closed the bowl and ran it out of fuel. Upon getting fuel back, the symptoms are the same.
Any idea what is making this old VA pump act like this? Whacking on it has not loosened anything that matters.
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