Intake manifold installed today, little big of a bog when i hit the gas

[Jdunx98GT]

So I just installed my new intake manifold. Everything looks like its right, no leaking everything looks fine. BUT, when i step on the gas it starts bogging or studdering. Do not know what it is, and cant figure it out. Ideas?

[Sainte]

At first guess, I would suggest you look for a vacuum leak. Maybe you split a line or missed one. Maybe one isn't seated all the way?

If you're running the 4.6, there's a nasty rubber line that likes to corrode right behind the big metal elbow on top of the intake manifold. I've had to change mine twice on the f-150. It is almost right up against the firewall.

[Sainte]

Did you find the cause yet?

[Mlarv5]

Originally Posted by Jdunx98GT

So I just installed my new intake manifold. Everything looks like its right, no leaking everything looks fine. BUT, when i step on the gas it starts bogging or studdering. Do not know what it is, and cant figure it out. Ideas?

What engine? If it is a Carb engine I have seen to big of ports on the Carb do this something. Depending on engine and carb will give you different answers.