Bought a 2007 Type-S recently, and it runs poorly. I'm replacing a few things to try to make it run better, but right now I am going to adjust the valves. I had a question about the butterfly flaps in the upper intake. Should they be closed completely when not activated? Mine have a gap, which hopefully shows up in the pictures.

 

Sorry I don't have the answer but does anyone have a part number for that little gasket thing I guess it would be on the bottom where it sits down in the manifold?

 

https://www.oemacuraparts.com/v-2008...ntake-manifold

 

oh thanks never even saw that I already ordered the manifold gasket kit and was hoping it would come with but didn't

 

But to OP, I BELIEVE it should be closed when the engine is off.. I took mine off to do a valve adjustment this weekend and i believe it was closed as well.

 

yep it's supposed to be closed jsut went and checked my extra type s manifold

 

Thanks all. I'll have to investigate why it's not closing..

 

If it turns out that the IMT solenoid is bad, is there any alternative to the 17150-RNA-A01 that's less expensive, or is the OEM part the way to go?

 

not sure myself but could go to a junkyard if you have one local mine always has tl's

 

It's much worse than I thought. Did a leakdown test today and the results were not good. Going to pull the heads...

 

here are all the honda's that use the same valve:
https://www.hondapartsunlimited.com/...ve-17150rnaa01

The leakdown was done with each cylinder at TDC? any change with a wet cylinder?

 

Thanks. I have two Odysseys and I was thinking on substituting a valve from one of them to test.

Leakdown tests were done at TDC using the marks on the front cam. I did not try adding fluid. I also discovered that whoever installed the timing belt got the back cam one or two teeth off. That's certainly going to affect performance.