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Old 02-06-2013, 07:42 PM
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Spork Spork is offline
MC Maniac
Join Date: May 2010
Boat: Sporkcraft
Location: South
Posts: 3,726
I haven't used seafoam as top end cleaner although I have used gm's top end cleaner, simply use a manifold vacuum source (like your pcv port) you will need to keep the revs up until all fluid has been consumed and it will very likely smoke. I haven't done a boat but have done many cars.
a spoon-shaped eating utensil with short tines at the tip
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