Does anyone know how to use Seafoam on a 1991 camry?....
 

i dont know how to put it into the intake

you need to suck it in from a vacuum line

Seafoam in 1991 camry
 

As with any car, I would say to just put a bottle in a full tank of gas and drive your car like normal.

I normally just suck it in through the pcv port. Works great. Others have stated that they run it through the brake booster port. That is where sometimes run some purified water through to steam clean the system.

Matt
 

I think he is speaking to Seafoam Fogger vs the fuel additive. Seafoam is great stuff!