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nissan altima 1993, strong smell of gas fumes
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ionmachiman
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Jun 10, 2009, 1:13 PM
Post #1 of 7
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nissan altima 1993, strong smell of gas fumes
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Hi,
car: nissan altima 1993 se, engine 2.4 l, automatic, 208000 Km
trouble: after driving a while there is a strong smell of gas fumes, outside near the car, on the driver's side. The strongest smell seems to come from somewhere at the middle under the driver's door, not from rear arround the gas tank cap, not from inside (under the rear seat there is a hole to access the fuel tank - not from there for sure). Driving in hot wheather make the smell so strong that it is brought inside the car through the ventilations vents; ; with the engine cold, there is no smell and I looked under the car for signs of gas, but there is not any dripping;
what can be the trouble and what should i check? is there a fire danger?
ty
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 10, 2009, 1:15 PM
Post #2 of 7
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Re: nissan altima 1993, strong smell of gas fumes
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The fuel lines run along the frame on that side. You likely have a metal gas line that has rusted away and is leaking. That's very dangerous and needs to be taken care of right away. They will have to fabricate a section of line and use "bolt together" unions to splice it.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Loren Champlain Sr
Veteran
/ Moderator
Jun 10, 2009, 1:31 PM
Post #3 of 7
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Re: nissan altima 1993, strong smell of gas fumes
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To add to Hammer's suggestions; Fumes could be coming from the vapor cannister, under the hood. When folks fill their fuel tanks and 'top them off' they can actually fill the cannister with raw fuel. (Once the pump clicks off, never add any more fuel.) If the fumes are coming from the vents, it suggests to me that the smell is coming from the engine compartment. Yes, fuel and it's vapors are a fire/explosion hazard and need to be addressed immediately.
Loren
SW Washington
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ionmachiman
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Jun 10, 2009, 5:53 PM
Post #4 of 7
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Re: nissan altima 1993, strong smell of gas fumes
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i found that the hose conecting the vapor canister with the intake, was cracked;
i hope it is the only one cracked;
when i replaced it i found a very interesting thing; through the crack i saw something shining;
i cut the old hose and inside was a piece of copper that greatly reduced the diameter of the hose to
the size of a nail; it looks like the seat of a valve with a ball and a spring, and is simetrical at both ends ;
could it be in that a valve and i lost the ball and spring, or some other part is missing...? if not, what is the reason for that piece?
i put it back in the new hose, about the same position i think, but i'm not very confident because
i don't understand the purpose.
ty
now i found a diagram of the evap system and there is something on the connection to the intake, "Main control orifice";
is that the purpose of the piece? to lower the diameter to a very small one?
(This post was edited by ionmachiman on Jun 10, 2009, 6:49 PM)
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Loren Champlain Sr
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Jun 11, 2009, 2:31 PM
Post #5 of 7
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Re: nissan altima 1993, strong smell of gas fumes
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ionmachiman; Those pieces could be from the cannister soleniod or the check valve on top of the cannister, itself. Whatever they are, they aren't supposed to be loose in the hose. Are they close to the cannister, or upstream closer to the EGR valve? That should help identify where they came from. Remove the charcoal cannister and see if there is raw fuel in it. There should be none. If there is, you've found the problem. And, the cannister will have to be replaced, too.
Loren
SW Washington
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ionmachiman
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Jun 12, 2009, 5:10 AM
Post #6 of 7
(6365 views)
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Re: nissan altima 1993, strong smell of gas fumes
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On the top of the canister there are 3 hoses; hose to vacuum (from what looks like a plastic dish on the top of the canister), hose to intake (from under what looks like a plstic dish on the top of the canister) and a hose to the fuel system (for fumes i think). I don't know if there are other hoses somewhere under the canister;
Now, the piece i found was in the hose to intake, close to the canister side; on the diagram i showed where I think these three hoses are located (3 blue arrows and text) ; On the diagram is mentioned "Main control orifice" and i think that is the piece i found in the hose; why is in the hose and not in the plastic tube (part of the canister) in which you plug this hose i don't understand; i saw it by chance and i would have replaced the hose without even know about it.
The diameter of the piece fits exactly the hose, and i don't think it can get into the plastic tube on the canister side or into the metalic tube on the intake side;
i attached the evap diagram
ty
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Attachments:
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evap.jpg
(69.5 KB)
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Loren Champlain Sr
Veteran
/ Moderator
Jun 12, 2009, 4:37 PM
Post #7 of 7
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Re: nissan altima 1993, strong smell of gas fumes
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From the diagram and your description, it sure looks and sounds as if it is the cannister purge valve.
Loren
SW Washington
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