EVAP Hose Issue

[JoshBarber]

In my search for a cause of fuel related troubleshooting....I noticed that the rubber hose (which is labeled "AIR" on the box) running from the EVAP box, is kinked. I have a pretty good kink, that would definately cause restriction.
This hose is about 1" in diameter......seperate from the two other lines labeled as fuel lines.......
and of course when I called the dealer they wanted nothing to do to assist me with the functionality of it unless I dropped money for them to "really have a look at it".

assholes as usual.

anyway....can anyone tell me what this "AIR" hose's function is...and if its kinked what type of problems I may have as a result?

Thanks so much.

[JoshBarber]

Nevermind, Ihave the drawing.....its just called out as regular 5/8 hose. No part name etc. Shit. If anyone can get a function of this hose for me...it'd be GREATLY appreciated. Till then, I'll probably just go get some 5/8 from AutoBone, and cut it to size

[JoshBarber]

Still waiting for someone to explain the function of this hose if possible.
And what kind's of problems (if any) that might arise as a result of it being kinked.

Here's the BEFORE:




and the AFTER:

[gmtech79]

looks like someone either patched or relocated your vent valve

[Jeremy Fitch]

The EVAP system is an emission control system that prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine to be burned.

[JoshBarber]

Originally Posted by Jeremy Fitch

The EVAP system is an emission control system that prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine to be burned.

thanks I have the Chilton's manual with the description of the EVAP.
Unfort. that doesnt answer what the specific function of the rubber hose is in addition to the two fuel lines.

[chcknugget]

hahaha, this stems from the problem I had last week where no one helped me with my p0440.

It goes to the purge solenoid. There is a vacuum in the hose, and the purge solenoid is a valve that opens and closes and does diagnostic stuff.

[JoshBarber]

Originally Posted by chcknugget

hahaha, this stems from the problem I had last week where no one helped me with my p0440.

It goes to the purge solenoid. There is a vacuum in the hose, and the purge solenoid is a valve that opens and closes and does diagnostic stuff.

so what exactly would it effect if the vac. hose is restricted or kinked?

[JoshBarber]

Originally Posted by gmtech79

looks like someone either patched or relocated your vent valve

what do you mean? somethings different on mine?

[Jeremy Fitch]

The vacuum line pulls the vapors from the canister back into your engine to be burned when the purge solenoid opens. Were you getting any kind of trouble codes from the EVAP system?

[chcknugget]

It shouldn't really matter if it's kinked, as long as it isn't totally blocked. Any codes?

The original mount for the solenoid is on the crossbar above the spare tire.

[JoshBarber]

Originally Posted by chcknugget

It shouldn't really matter if it's kinked, as long as it isn't totally blocked. Any codes?

The original mount for the solenoid is on the crossbar above the spare tire.

thats where it still is

[scholzee]

I will check mine but I believe that hose goes to the filler neck and catches fuel over flow.

[JoshBarber]

Originally Posted by scholzee

I will check mine but I believe that hose goes to the filler neck and catches fuel over flow.

no scholzee, this is a seperate hose from the overfill hose but thanks.

[JoshBarber]

thought I noticed a faint smell of gas today when I got out of the vehicle after driving, but not sure where it was coming from