check engine check fuel cap

[gary mendelow]

i have an '01 sporty and i keep getting these lights coming on...most recent code said there was a severe leak in the fuel system...probably the gas tank filler tube right????



i got a new gas cap and it went off for a while..but it has come back on..pulled the code on the check engine and it stayed off for days and then came back on..



can anyone help me with this????



thanks,



[email protected]

 

[Kenny Hunnicutt]

I had the same issue awhile back, mine was a vent line that was tied into the air box above the spare tire. I had to drop the air box when I changed my rear shocks & I didnt get one of them reconnected good!

Kenny

 

[EddieS'04]

Kenny is right check all tubing connection. You mayhave to trim the end then tie wrap it thight.

 

[Kevin Palmer]

The O-ring on the cap seems to fail somewhat often as well. At the very least, clean it with some windez and then put a light coat of oil on it to get it to seal again.



As the others said, the vent / tube is also a common failure..

 

[Bill Koonce]

It would help to know the code(s). But since you tried a new gas cap, you probably have a problem with your evaporative emission control system. The "evap" system is essentially a canister of charcoal that holds and condenses fuel vapors, then returns them into your fuel system. When it's working properly, it saves you fuel that would otherwise be lost. But it does rely on hoses that can crack or be damaged.



Your '01 should NOT have any vent to the atmosphere, and most certainly should not have an "air box" that unburned fuel can get into! That's just asking for trouble...



If somebody has modified your fuel system "for better performance", you might have to spend a large chunk of change to put it right again. But that's better than turning into a rolling fireball, which is what could happen if your evap system has been tampered with.

 

[gary mendelow]

I have never done anything to the fuel system...where do i find the cannister of charcoal???