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Old 08-14-2019, 07:11 AM   #16
jleonard
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Also take note that is not only a filter that will cause high vacuum readings. It could be a hose collapsing internally, a plugged tank vent, et al.
Next time take the fuel fill cap off and see if the vacuum goes down.
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Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
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