Is it normal on a merc 140 to have no vacuum at WOT? If not what should i do to fix it? Thanks!
J j4ivi35 Cadet Joined Aug 28, 2007 Messages 6 Aug 30, 2007 #1 Is it normal on a merc 140 to have no vacuum at WOT? If not what should i do to fix it? Thanks!
Haut Medoc Supreme Mariner Joined Jun 29, 2004 Messages 10,645 Aug 30, 2007 #2 Re: quick vacuum question Yup......
wire2 Lieutenant Commander Joined Jun 25, 2007 Messages 1,584 Aug 30, 2007 #3 Re: quick vacuum question Think about it; Wide open throttle, all that outside air allowed to flow into the manifold with almost no restriction....
Re: quick vacuum question Think about it; Wide open throttle, all that outside air allowed to flow into the manifold with almost no restriction....
R Robj Lieutenant Joined Mar 22, 2007 Messages 1,441 Aug 30, 2007 #4 Re: quick vacuum question You are talking about manifold vacuum, which drops as rpm increases, whereas ported vacuum or the vacuum at the carb venturi increases. Have a great day, Rob.
Re: quick vacuum question You are talking about manifold vacuum, which drops as rpm increases, whereas ported vacuum or the vacuum at the carb venturi increases. Have a great day, Rob.
