Raw Gas Smell/Unknown Part - Defender Source
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  #1  
Old August 4th, 2013, 03:25 PM
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Exclamation Raw Gas Smell/Unknown Part

Had a raw gasoline smell from fuel tank area on my 1997 D90 NAS. Dropped the tank for inspection and other reasons. I observed a clear hose which appears severed or disconnected. The hose extends from a black plastic box located in the rear wheel well on passenger's side. What is the "cut" hose supposed to be connected with? The fuel vent pipes? I cannot find any diagrams on the websites or in the manual.

Also, I followed the frame rail to the engine looking for the remaining part of this hose but none exists. There is, however, a similar hose running out of the "black box" and to the engine and I assume its the fuel line. The "black box" has a total of three connections and one is the fuel line.

Photos attached.

Q 1: What is that box called?

Q 2: Where does this hose connect?

Q 3: What does the fuel tank vent pipes connect to?
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  #2  
Old August 4th, 2013, 04:00 PM
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That "box" is part of your "evaporator" system and that hose connects to nothing...it just equalizes pressure and vents to the atmosphere.
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Old August 4th, 2013, 04:07 PM
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Quote:
Originally Posted by Bill Larson View Post
That "box" is part of your "evaporator" system and that hose connects to nothing...it just equalizes pressure and vents to the atmosphere.
What Bill said - and you likely have a leak in the either the breather or fuel filler hose. Probably the former.
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  #4  
Old August 4th, 2013, 06:23 PM
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Thanks for solving that puzzle for me. I will check both filler and breather lines like you said.

One more issue: When I dropped the tank I saw the end of the fuel tank vent pipe was not connected to anything. I figured I may have forced the disconnect as the tank was lowered. What do the fuel tank vent pipes (the end) connect to? Is it one of the hoses coming out of the evaporator box?
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