New to this site...
Was wondering where or what vac lines I could use to add a seafoam upper engine treatment? Any help or instructions would be a great help!

 

I just took off the intake tube and poured it right into the throttle. When I ran it through my Saturn I poured it into the PCV hose, I've heared of people using the vaccum line off the brake booster too.

 

Welcome to the site,
I found that using the brake booster line was the most effective way to introduce Seafoam into my engine. As directed on the can, use about 1/2 to 1/3rd to do an upper intake system, then pour the rest into the fuel tank.

What a difference it made in driveability for me. Let us know what your results are.

Good luck.

 

ok haven't done the seafoam treatment yet. I had to change out the fuel pump. I have also heard that it is a good idea to change the plugs after. Is this completely necessary or can this be avoided?

 

After doing an intake seafoam treatment, the plugs often foul. If they are fairly new plugs, you can remove them and clean them, but if they have been in for any long amount of time, they should just be replaced.