Seafoam 'Top end clean' - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 3 (permalink) Old 06-23-2011, 07:17 AM Thread Starter
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Seafoam 'Top end clean'

Having just done a top end clean in my car, using the brake booster vacuum line, was wondering if there is an equivelant method of doing the same thing on the bikes. Already use in the fuel, gonna put some in the oil before I change it this weekend but was curious on the intake side of things. There is a hose coming off the front cyclinder with a little filter on it, a crankcase vent? Does that 'suck' or 'blow'?

1986 VN750
K&N Filters
No airboxes
New! Dunlop 110/90-19 front
150/90-15 rear
Aftermarket pipes
Iridium NGK plugs

"STUPIDITY SHOULD BE PAINFUL"
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post #2 of 3 (permalink) Old 06-23-2011, 07:40 AM
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That hose would be a Positive Crankcase Vent Hose.....so it blows from the crankcase into the original air intake plenum. Either use the vacuum ports on the side of the carbs or spray seafoam directly in the throats of the carbs. Question is....have you done an Earshave to your bike?
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post #3 of 3 (permalink) Old 06-23-2011, 07:59 AM Thread Starter
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Yes, earshave is done, with plates covering where the vacuum hoses used to be.

1986 VN750
K&N Filters
No airboxes
New! Dunlop 110/90-19 front
150/90-15 rear
Aftermarket pipes
Iridium NGK plugs

"STUPIDITY SHOULD BE PAINFUL"
eberghold is offline  
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