these directions are from the Seafoam website:

"With engine warm, slowly pour 1/3 to 1/2 pint through carburetor or throttle body throat. (If vehicle is port injected slowly pour SEA FOAM through direct manifold vacuum line that will feed all cylinders, possible sources are P.C.V. valve or brake booster line.) This will pull SEA FOAM down on top of the pistons and to the back of the intake valves to dissolve carbon."

Does this mean pull the PCV and it pour down where it sits in the rocker arm cover?

thanks for your responses

 

i did it in the break booster just remove hose and pour it down.. put the other half in the gas tank... and if youput it in oil then make sure you change it!

 

change oil on regular cycle or put in the oil just before next change

 

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