Verifying My Fix for Very Small Vacuum Leak

[CharlieS]

Glad they didn't pass it. I found the vacuum leak. Took about 2 minutes once the smoke machine was set up.

In the engine bay there is a flexible hose connecting the hard line (goes back to the charcoal canister) to the vacuum purge valve bolted to the valve cover. That line rubbed against a factory wire harness and over 10 years and 138k miles, wore through.

I don’t know how to post video - it was painfully obvious where the leak was given the vast amount of smoke pouring out the side of the hose.

I don’t have any hose in the right ID handy, so I trimmed the hose down after the hole and it will do the job until I can get the part in (probably Tuesday).

It is a good reminder for me to do the work. Do diagnostics. Smoke test it. Don't just throw parts at the problem.

This was one of the cheapest smoke testers on Amazon and it has saved me many multiples of its purchase price over the last couple of years.

 

[Spaghetti Sauce]

Great detective work! Permanent codes will still take some time to clear,l. If you met the 15/200 or if it self clears, you're good to go.

 

[prharper]

Same thing happened to @rlynch356
He did a smoke test and looks like same hose. (I posted the part # on other thread).
Pic of Rob's.

 

[CharlieS]

Thank you!

 

[Hoosier Daddy]

I went out and looked at my 2010 LC. At their nearest point, that hose and that wiring loom are several inches apart on mine. No way they could ever touch. I wonder why some 200s are having contact between those components.

 

[prharper]

2018 here. Just looked at mine and slight contact. Put some Gorilla tape around this section after taking pic.

 

[Spaghetti Sauce]

My 17 . I'm curious if the hose was installed upside down on some vehicles. There's about 2 fingers worth of clearance below the canister hose to the fuel line.

 

[GrouchyTech]

Probably was installed incorrectly when something else was worked on.

 

[CharlieS]

Could someone share the "correct" orientation? I have one on order and want to install it correctly. Since mine was damaged, maybe it was wrong?

 

[CharlieS]

Probably was installed incorrectly when something else was worked on.

I just picked up the hose and the ends are marked with different color marks (lines). One end is red, one end is white.

On my vehicle the white end was down, attached to the hard line leading to the charcoal canister.

A prior poster suggested maybe the part was installed incorrectly causing the rubbing/interference with the wire harness.

Can anyone who has the hose installed “correctly “ share their orientation?

 

[GrouchyTech]

I just picked up the hose and the ends are marked with different color marks (lines). One end is red, one end is white.

On my vehicle the white end was down, attached to the hard line leading to the charcoal canister.

A prior poster suggested maybe the part was installed incorrectly causing the rubbing/interference with the wire harness.

Can anyone who has the hose installed “correctly “ share their orientation?

View attachment 4132060View attachment 4132061View attachment 4132062

I’m eeeeeeighty percent sure the red end connects to the VSV (vacuum switching valve) at the top of the engine.

 

[bloc]

I’m eeeeeeighty percent sure the red end connects to the VSV (vacuum switching valve) at the top of the engine.

Yep

 

[bloc]

2018 here. Just looked at mine and slight contact. Put some Gorilla tape around this section after taking pic.

View attachment 4129910

What is the black braided line under the harness? and is the gray harness locating clip attached to a bracket? It should be.

 

[CharlieS]

Thanks everyone.

I will install it red side toward the engine.

Not sure if I mentioned this, but the permanent code cleared after cutting off the end of the hose with a hole, reattaching, and driving a couple of hundred miles (~40 mile commute either direction adds up fast).

 

[prharper]

Took two more pics of mine. You can see where I added the tape around the bottom of the hose that was touching the clip. I've had no engine work done around there so if it's not installed correctly, it was done at factory in Japan.

 

[bloc]

Took two more pics of mine. You can see where I added the tape around the bottom of the hose that was touching the clip. I've had no engine work done around there so if it's not installed correctly, it was done at factory in Japan.

View attachment 4132507View attachment 4132508

I don't think your wiring harness is in the factory location, possibly related to the ARB compressor. Or another aftermarket harness that seems to run through there.

The first image you showed has a gray harness retaining clip in a very different place than the other pics of the area posted in this thread. So even if the hose is in the factory location, what it's rubbing on may not be.