Hey HondaTech, I am trying to help my friend with his 95 Honda Accord Ex with f22b1 vtec engine but cannot seem to find any diagrams or good pictures of the vacuum line routing.

My friend bought the car a few years ago and we came across a few vacuum lines that were not hooked up to anything and just plugged with nails and could never figure out where they were supposed to go.

A couple months ago he blew the engine and we swapped in a "30k mile" jdm f22b from HondaMotorsOnline. We got everything hooked up except for the few vacuum lines that were never hooked up.


If any of you know of any good diagrams or pictures of the vacuum line routing I would GREATLY appreciate it.

We could REALLY use some assistance figuring out these "random" vacuum lines. Thanks everybody!

 

Can you narrow down the area of "said hoses"?

Example of "said hoses" - the arrows are where I was trying to help someone else......

 

I believe one of our mystery vacuum hoses is the one coming from the fuel injection air fia valve, and one of the others is supposed to go to the intake air resonator valve.

From what I can tell these hoses were plugged (with nails) due to the aftermarket intake that was on the car when he bought it.

I suppose we could leave these hoses plugged with the nails, but what is THE BEST thing to do with them? Drill holes in the metal intake pipe for the hoses? Leave them open with an inline filter on them?

 

The 2 circled in red are the ones that are plugged with nails.

Not sure whats going on with the two circled in green. I imagine they arent hooked up to anything either since the stock intake/resonators are gone.

What is the correct thing to do with these vacuum hoses? Im not looking for the cheapest or easiest thing to do with them, I am looking for the correct thing to do with them. Thanks guys! (and gals)

 

Anyone know the correct thing to do with these vacuum lines that are disconnected due to the cai?

Im sure just being plugged with nails can't be correct

 

IIRC, on my '95 EX with AEM CAI, hose that normally goes to the factory air intake tube just needs a filter on it. AEM provided a small foam piece that slid into the metal tube but allowed air flow.
If all the IAR controls are gone, then plug the open port on the upside down 'F'. But IIRC you can remove all the hoses back to the manifold 'boost valve' that sits on the end of the intake manifold near the Brake MC and install a vacuum cap.
Although I swore on my own car all the IAR controls were left intact.

 

I have the same problem, but i dont have the "upside down F" its just a hose coming out of the check valve. Can i just plug that or put a filter? if so, what kind of filter? And the other red circle is where my line is disconnected, just have the hose sticking out right where its circled.