Fuel Vapour Visible From Fuel Cap?

[Guest nessie]

Hi

 

As in another post my car failed the MOT twice now for various things but the second time round they noticed fuel vapour coming from the petrol cap and put this as a fail!!

 

Looking myself with the engine runnning there is a lot of vapour to be seen. Pushing the cap on hard against the filler neck didn't make much difference either. I know there is a flat seal/gasket in there and think i should try this.

 

Anybody had this problem or know if you can get the seal/gasket on it's own?

 

Cheers

 

Dave

[Baz 421]

Noticed it myself on a few of my 205's in the past, never given it much thought though tbh.

[sonofsam 5]

Yep I have this, on some days you can notice what looks like a heat haze eminating

from the cap(from looking in the side mirror). Have put it down to the plastic half ring lugs that align round the intake to the filler neck, wich are indeed plastic and have over the years been pulled and pushed so they are half hanging off! On my P1 1.9 these lugs were metal, however on my P2 1.6 they are plastic.

I feel a complete filler neck update is needed, not a job Im looking forward to as

the jubille clip that holds the main neck in the lower wheel arch is completely rusted

to the pipe and any force applied will result in shearing!

 

Hoping there maybe a more viable solution But the petrol cap never seems

like a good fit anyway on both 205's I've owned.

 

I see the reason they failed it though, any subastance leak is classed as such I beleive, especailly flammable.

 

Hope you can get it fixed mate and update this thread as to your pogress

 

Sam.

[Guest nessie]

will update once i figure it out!!

 

Cheers

 

Dave

[jackherer 543]

Mine did this and I didn't think much of it until I followed it round a track with my mate driving and saw fuel sloshing out under hard cornering