Slight Flat spot

[Madman]

Hi i have a 2004 182 with a K tec zorst.
Today it has started to have a flat spot, it happens when i let off the throttle then put my foot down again and when i got out the car the exhaust smelt really strongly of sulphar.
Any info would be great.
Cheers Simon

 

[Jonff]

The sulphar/eggy smell would indicate the cat might be on it's way out.

 

[chris182cup]

Decat it man

 

[Camble]

Deffo the cat on its way out, will have to be replaceded mate.

Either that ot decat like Chris said, but you'll need a cat for MOT anyway.

 

[Madman]

Ok cheers will change the cat, any idea with the flat spot

 

[chris182cup]

My centre box collapsed internaly when I had standard exhaust and it had a flat spot around 3.5k got new exhaust and decat - no more flat spots. If u get a decat just borrow someones cat mot time if they too have a decat.

 

[Sean6545]

Eggy smell is not the cat failing, its unburnt fuel going through it.

1st thing I would be doing (especially for flat spots) is getting a diagnostic check for a possible pre cat 02 sensor fault. 182's are notorious for this.