Question about 1998 Ford Explorer
When i went to get my Explorer inspected the guy said there is a large leak usally in gas canistor but he does't know where it is or how to test it. I also read that it may be the gas cap. Can someone please let me know if they have had the same problems and how they fixed it. Thanks. Robert
There is a system for removing vapors from your fuel tank to protect the environment.
As u use up gas, the tank has more space to accomodate vapor from the gas. When u fill up, this could expand out thru the gas filler pipe and in the air, and be potentially dangerous.
So there is a pipe that leads from your tank to a charcoal canister. A pressure sensor reads the excess pressure in your tank, then opens an electrically controlled valve to allow the vapor to pass thru the charcoal canister, cleaning out the dirty pollutants, and releases the gas into the atmosphere.
A faulty gas cap means that the pressure sensor never reads any pressure and tells the computer that the valve has not opened. The computer then throws up a code indicating an evap leak.
So 1st, as your man said, change the gas cap. Have the engine light switched off at your local garage, or autozone, then drive and see if the light comes back on.
If it does, the evap canister for your vehicle is slightly behind the fuel tank. The spare wheel need to be removed, then the evap canister can be checked out. There are 2 or 3 bolts holding it on. It should be lowered and all the pipes inspected for leaks. Many garages will check for this leak for you with a smoke machine.
Last one I fixed had the inlet pipe eaten by a mouse/rat.. there may be some odour that attracts them. Cracked pipes are common.
Hope that helps some....
Posted on Jan 13, 2009
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Posted on Jan 02, 2017
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