My intake manifold seems to be making a chirpy high-pitched ticking sound. Is it possible that the butterfly valve inside it is coming loose? If so, is it possible to adjust it in some way without removing the whole thing? It's a two-stage B18C1 manifold. Thanks in advance.

 

hmmm. I dont really have any thoughts except that the noise is coming from the intake valves and is projecting from the intake manifold.

Are you sure its actually coming from the manifold? Ive taken the manifold off before, and i cant think of anything to adjust off the top of my head...

 

Mre then likely its the intake valves just being a little loud.

 

Yeah, I've been told it could be the lost motion assemblies too. Just when I put my ear up to the valve cover i don't hear it nearly as strongly as when I put it up to the intake manifold.

 

use a screwdriver as a stepthsascope. hahahahahahah (sp)