Tried to seafoam my car tonight and the vac line that goes to the crank case has no suction. Does anyone know what the issue is? Thanks

 

see the new diy for details on correct vac port, not line, to use
see post #147 for pics of the correct port to use, it pulls 22 inches vac at idle
https://acurazine.com/forums/showthr...3&page=6&pp=25
you can raise and lower the can of seafoam onto a piece of hose to get it to go in slowly, while using right hand to move throttle to keep engine running