S2000 Under The Hood S2000 Technical and Mechanical discussions.

gas cap..

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Old Jun 2, 2006 | 06:51 AM
  #11  
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Originally Posted by jal3lee,Jun 2 2006, 07:23 AM
hmm.. i just got the cel because my cap wasn't tight. the freakin guy in the gas station has done it before. but here is the weird thing this time. I tightened and heard the 3-4 clicks.. drove another day and cel was still on. so i did it again last night. i took the cap off and put it back on.. i turned it a couple times and got 2-3 clicks, so figured i'd turn it a couple more times.. no clicks until i made 3 full turns then it was completely tight. cel is off this morning. now ii'm wondering if it's this filler neck issue.
Yes, it is. That is the exact symptom.
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Old Jun 2, 2006 | 10:47 AM
  #12  
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I had one with a deformed gas cap. The cap should be able to spin on and off very freely until the gasket meets. (This one didn't)

Just keeping everyone honest!
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Old Jun 2, 2006 | 11:30 AM
  #13  
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Mine worked great until a month ago. Got the CEL. Up to this point I've been tightening the cap by just grabbing the spine and twisting until it was seated. Now after it starts clicking I have to grab the sides and squeeze while turning. It'll spin another revolution before seating properly. No gas smell (yet).
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Old Jun 2, 2006 | 01:27 PM
  #14  
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I have this same problem. As Ravenwerk said, just grab the side of the cap when you tighten the cap until its gets past the part where it binds prematurely.
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Old Jun 2, 2006 | 04:37 PM
  #15  
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Originally Posted by Voodoo_S2K,Jun 2 2006, 02:27 PM
I have this same problem. As Ravenwerk said, just grab the side of the cap when you tighten the cap until its gets past the part where it binds prematurely.
Been there, done that. That will stop working pretty soon.

Guys, just fix the actual problem....
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Old Jun 2, 2006 | 06:52 PM
  #16  
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From: Oak Park, ca
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Had the same problem on my 02 at about 15k miles. Dealer had no idea because it was before the TSB. Just replaced the gas cap w/ a new one and had no problem since (will turn 90K miles this week).
One quick note, it will take a few cycles of on-off to reset the light. Good luck.
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Old Oct 11, 2011 | 03:03 PM
  #17  
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this is somewhat off topic, but i had similar issues.... thanks to everyone for their comments which helped alot!

okay so thanks to your thread and many other i have deduced the problem on my end.

step one to figuring out if the problem is the same as mine!
-smell your engine bay and all around the compartment, if the fuel smell is not coming from this area it is not a fuel pump related issue!
TWO
-immediately after turning off your car(or when you notice the smell), smell all around your fuel cap(but don't get high)and see if the stench is strongest here... if the smell seems to be emitting from this area YOUR FUEL CAP MAY BE BAD! next, after deducing that the smell is strongest where you refuel open the door and put your ear close to the fuel cap(without un screwing the cap), if you notice a faint seeping sound (as in pressure leaking from fuel tank) YOUR FUEL CAP IS DEFIANTLY BAD!

i noticed that this only happens after pressure has built up (which is much valued) in the gas container leading to a leak, which makes sense for those individuals (such as me) who live in hot climate areas.

i was very annoyed at this issue and noticed my fuel economy had substantially dropped! my mile per gallon were going down hill and when gas is much valued you don't want this! i noticed the smell was not emitting from my engine bay, and more so from where the fuel cap is located(behind the driver-side rear wheel)! i also noticed a small *fissing* noise from my fuel cap which sounded like a small leak (say from an air compressor with a leaky valve) i then pulled off my fuel cap and noticed that the main seal had two minor fracture cracks in them, which would easily mean that gas could escape due to increased pressure build up. (not liquid gas but gas gas... you know what i mean, like a co2 gas.. yea!) anyways i found that the solution to this issue was as easy as .... you guessed it ... a new fuel cap! their about $23.50(+tax) at your local Honda dealer[part number '17670-SM4-A04']... may be less if you live near an on-line OEM parts dealer due to low shipping rates, but in my case more expensive on-line! so please spread the word since many seemed to be confused and without an answer to this issue!

but this was in my case and seems to be that of many others as the smell is emitting from the rear driver side region!
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