WHAT IS THIS???
Thread Starter
Senior Member
Joined: Mar 2010
Posts: 693
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From: Carrollton, Georgia
Year: 1995
Model: Cherokee
Engine: 4.0 Liter High Output
When changing my valve cover gasket I was removing the valve cover and noticed that the hose going to this fitting was rotten and basically falling apart I want to know if this is part of the a\c to know if i should replace this as soon as possible or if it can wait. Also where can i get a haynes manual cheap??
Member
Joined: Nov 2008
Posts: 173
Likes: 0
From: Kennedale, Tx
Year: 1995 2WD & 1988 4WD
Model: Cherokee
Engine: 242
Looks like where the canister purge line hose goes ,
its for the fuel system.
http://jeepgarage.free.fr/OWN/vacuum%20diagrams.pdf
its for the fuel system.
http://jeepgarage.free.fr/OWN/vacuum%20diagrams.pdf
Thread Starter
Senior Member
Joined: Mar 2010
Posts: 693
Likes: 0
From: Carrollton, Georgia
Year: 1995
Model: Cherokee
Engine: 4.0 Liter High Output
what if i drove it without it hooked up plus there is no telling how long it has been rotten and cracked anyway is this bad???
CF Veteran
Joined: Apr 2009
Posts: 1,097
Likes: 1
From: Jacksonville, FL
Year: 1989
Model: Cherokee
Engine: 4.0L
Why leave a problem broken? Im sure its easy to just buy some vac line and fix it up so its correct. Even if your are running fine. If its wrong its wrong.
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Senior Member
Joined: Jan 2010
Posts: 999
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From: Brentwood, TN
Year: 2001
Model: Cherokee
Engine: 4.0
no matter what it is, it looks like it has a nice little wet spot right under it. So even if something is coming out or going in it has some importance to the engine. Replace it soon. Not replacing hoses may not show any issue right away even if its an emissions part, but will cause you problems. I wouldnt jump to changing all the hoses just yet either. Just inspect what you can and change what does not feel solid.
Member
Joined: Nov 2008
Posts: 173
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From: Kennedale, Tx
Year: 1995 2WD & 1988 4WD
Model: Cherokee
Engine: 242
Evaporative (EVAP) Emission Control Systems
Since gasoline vapors contain HC, these vapors must not be allowed to escape from the fuel tank to the atmosphere. In the EVAP system, a hose is connected from the top of the fuel tank to a charcoal canister. Gasoline vapors from the fuel tank are stored in the charcoal canister and then purged into the intake manifold when the engine is running under certain conditions.
Since gasoline vapors contain HC, these vapors must not be allowed to escape from the fuel tank to the atmosphere. In the EVAP system, a hose is connected from the top of the fuel tank to a charcoal canister. Gasoline vapors from the fuel tank are stored in the charcoal canister and then purged into the intake manifold when the engine is running under certain conditions.
Thread Starter
Senior Member
Joined: Mar 2010
Posts: 693
Likes: 0
From: Carrollton, Georgia
Year: 1995
Model: Cherokee
Engine: 4.0 Liter High Output
Evaporative (EVAP) Emission Control Systems
Since gasoline vapors contain HC, these vapors must not be allowed to escape from the fuel tank to the atmosphere. In the EVAP system, a hose is connected from the top of the fuel tank to a charcoal canister. Gasoline vapors from the fuel tank are stored in the charcoal canister and then purged into the intake manifold when the engine is running under certain conditions.
Since gasoline vapors contain HC, these vapors must not be allowed to escape from the fuel tank to the atmosphere. In the EVAP system, a hose is connected from the top of the fuel tank to a charcoal canister. Gasoline vapors from the fuel tank are stored in the charcoal canister and then purged into the intake manifold when the engine is running under certain conditions.
Never seen a vacuum line hooked to a dryer before. A/c system has massive amount of pressure dont know how a vacuum line would stay on it. Not saying thats not what it is. What other kind of lines are hooked to that can?
CF Veteran


Joined: May 2008
Posts: 5,188
Likes: 6
From: Bristol,Pa
Year: 94
Model: Cherokee
Engine: 4.0L
Evaporative (EVAP) Emission Control Systems
Since gasoline vapors contain HC, these vapors must not be allowed to escape from the fuel tank to the atmosphere. In the EVAP system, a hose is connected from the top of the fuel tank to a charcoal canister. Gasoline vapors from the fuel tank are stored in the charcoal canister and then purged into the intake manifold when the engine is running under certain conditions.
Since gasoline vapors contain HC, these vapors must not be allowed to escape from the fuel tank to the atmosphere. In the EVAP system, a hose is connected from the top of the fuel tank to a charcoal canister. Gasoline vapors from the fuel tank are stored in the charcoal canister and then purged into the intake manifold when the engine is running under certain conditions.
Bingo...
Golden.. just last week i found my line was split and off the same spot. That vac line runs just behind the valve cover and has a clip to firewall. I was able to cut an inch or two off and reattch it.


