ya i had the same problem so i jus went and bought a new cap from mazda yesterday but now gotta get my light cleared off

 

it has been 200 miles so far and no check engine light appeared so I guess a new cap solved this problem for me

 

same here...small leak...got a new gas cap under warranty...no more light

 

how does the car detect an evap leak anyway?

 

yeah, my light has been off for about 2 thousand miles now.... i guess im lucky and it is going to stay off. im glad i finally bought a new cap

 

Bumping this as it is relevant to my problem.

So when I was getting my RX8 out of my garage this spring the car started and ran but the idle was constantly fluctuating. On the second start the car refused to idle at all.

Came onto the forums and found some threads recommending to clean MAF/IAT and the throttle body. I cleaned them both and the car idles beautifully. A day later my car threw a CEL. When reading the code it pulls a P0456, Small Evap leak.

I checked my gas cap, it was lose. Tightened the cap and the cleared the code. A day later the P0456 was pulled again. Bought a new cap without a tether and cleared the code. A day later the code has been pulled again.

Is it possible I loosened a line when I cleaned the throttle body? Not exactly sure what I should be looking for in the engine bay.

Should I just get the car taking to a shop to get a smoke test done?

Thanks.

 

Hey I have the check engine light on. I took the gas cap off and put it back on and tightened it a lot. I heard you are suppose to cycle your car 10 times before the light goes off. Does this mean fully turn your car on and start the engine or just turn it on so all the lights go on? Any help would be great.

Thanks

 

I don't think it takes 10 cycles, but it does mean driving it a bit, then parking for a while. The ECU monitors evap system pressure while parked, and throws one of those codes if it leaks down.

Why don't you have the code read at Autozone or someplace that does it for free?

There's a TSB and a special program (MSP13) on the gas cap. If you look those up they should help you figure out what's happening.

Ken

 

I hava 04 rx8 and I have the check engine light on I took the car to check that and come out the small leak and I buy the gas cap and it doesn't go off

 

clear the code

 

I did after cuz I took the car to a muffler shop to replace the cat and they clear the code and bought a new gas cap and the light come out

 

Hey my light came on with the same code since I've bought it about 2 months ago, I replaced the gas cap but it came back on, I'm not a mechanic but I work at a dealership, where can I find the charcoal c? And a diagram of the fuel l? Woukd they be on google??? Please help I have $10k in this and it's gonna be my daily driver so I CAN NOT have any problems that are major!!??

 

It is always helpful to list the specifics of your car: 2005 GT, AT,...

Please run a google search using the query rx8club.com RX8 wiring diagram or run a search using the query box above.

 

It's a 2004 RX8 manual with 64k miles. There's absolutely nothing wrong with it but all of a sudden the engine light keeps coming on with the EVAP code P0456. I've already replaced the gas cap and it is still all after they cleared the code. Is that more info for you?

 

2007 cel came on....p2401 code...2 weeks in dealership...new evap pump, smoked the lines, new gas cap, now they say the pcm is bad....not so sure about that. Went into the shop and talked to mechanic not sure he knows what's going on. Any ideas what to try next?

 

start here

https://www.rx8club.com/series-i-tec...n-guide-26291/