2004 Nissan Sentra emissions leak

Tiny
CEALRYAN
  • MEMBER
  • 2004 NISSAN SENTRA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 10,200 MILES
Why would a dump valve be used?
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Monday, August 10th, 2009 AT 9:33 PM

6 Replies

Tiny
STEVEW84
  • MEMBER
What is the problem you are having?
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Tuesday, August 11th, 2009 AT 12:45 PM
Tiny
CEALRYAN
  • MEMBER
I am just trying to understand the problem with my car and the solution that was done to my car, 200.00 dollars later. A dump valve was put on a charcoal basket. I guess it needed replacing. Engine soon light came back on, I took it back to the guy that is dealing with it for me. Now I'm told not the right gas cap. Apparently clicking this one 3 times is not offering enough weight to not make it leak? Does any of this sound remotely correct to you?
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Tuesday, August 11th, 2009 AT 2:23 PM
Tiny
STEVEW84
  • MEMBER
First, what is the code number? If it is a reputable shop then it should be on your receipt or the advisor told you.
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Tuesday, August 11th, 2009 AT 5:34 PM
Tiny
CEALRYAN
  • MEMBER
I was not given a code. And I am not doubting the guy. He is pretty good. I am just trying to understand what he is doing. I had a hose replace this past year that had to do with my gas tank. He also informed me today that the return line is also new, because I asked if there could be a crack in the return line. He wants me to try another cap. He said what is happening is that each time something is done, a different number shows up, and they are going to try the cap to see if that works to keep the light off. If it doesnt, they are going to do"smoke thru the car" to see where it comes out so they can find the possible hole, if one. Does any of this make sense? They told me some of these cars are sensitive to emissions leaks. Even a pin hole. By the way, Thank you for responding.
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Tuesday, August 11th, 2009 AT 7:23 PM
Tiny
STEVEW84
  • MEMBER
If you have the code(s) then I could explain to you what is going on and what he is probably testing. I can explain to you how the EVAP system works, but w/o the code then I can't tell you what he is testing and why.
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Wednesday, August 12th, 2009 AT 7:10 AM
Tiny
CEALRYAN
  • MEMBER
O.K. Thanks.
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Wednesday, August 12th, 2009 AT 9:42 AM

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