projectresto83

Well I just put clean heads and everything on my motor and my intake is still nice and pretty on the inside so I have no reason to use it lol.

holtzer1

actually, there is no reason to use it on any carbed application as the gas running through the intake cleans everything out...every time you drive it. the benefit is for fuel injected vehicles where the intake is only used as an air plenum. when the car is shut off, the vapors from any fuel travel back up through the intake and solidify in the air plenum. due to not having fuels running through up there, there is nothing to clean it out..hence, the reason this works good on f/i engines. so, if your running a carb, or cfi engine..youll be wasting your time doing this procedure...for you f/i guys...carry on.

projectresto83

You would be surprised on how dirty some intakes can be on carbed cars.

U S Marine

Well, not really. GM had it's own stuff called "Top Half" a LONG time ago, when fuel injection was very scarce. Carb cars are just as susceptible to carbon as FI cars. Most of my experience with those cleaners are with carbs.

projectresto83

Gas and oil can build up on things just as bad as EFI cars. If the PCV is hooked up thru the carb then it is pulling aerated oil thru the intake which can build up over time.

RODRIGUEZ

Thanks for the advice guys, I'll definitly be using Seafoam before my next tune up.