TOPIC: 2004 Toyota Corolla

Hey, guys

I just received my bits in the mail today. So i went right to work on my car.

I got the groove cut with no problems but I'm not really clear on what the purpose of capping the pcv valve is? If anyone could help me out with an explanation i would really appreciate it. thanks

You don`t cap the pcv valve you cap the vaccum source that went to the pcv. What this does is increase the vaccum inside the intake manifold as a pcv is a vaccum leak. Dan gadgetman Mo.

Thanks. that makes more sense.

I did cap off the PCV and am awaiting eagerly for the results on the mileage. But I can defiantly feel the difference under the peddle. I will post it as soon as I have a number on the fuel mileage increase.