KNONFS

iTrader: (14)

Whats up Guys?

I need to replace the primary injectors on my 91NA, now I am almost 100% sure that in order to access them, the upper intake manifold needs to be removed. Should I remove the lower intake manifold too? When acomplishing this task, is it totally necessary to remove the UIM?

Any suggestions?, tips?

Thanks!

V8kilr

you will have to remove the dynamic chamber, then remove the upper manifold.

from there you will see the fuel rail and primary injectors, you shouldnt need to remove the lower unless your 6 ports are stuck and you want to do a good clean up on them.

rotary>piston

yes, you must remove the UIM, then the injectors are right there.