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[mark.adams]

New cat recently fitted, occasional whiff of egg, is this normally caused by overfuelling and which O2 sensor should i  be suspicious of, does it on both LPG and petrol so not fuel dependant, MAF replaced with genuine GM one, only very occasionally get emissions light on and only on petrol. I am thinking one of the sensors on exhaust.

[al brown]

Fom the little I undrestand I thought the smell was normal from a new cat.

Al

[Welung666]

Any 'Not Present' codes stored?

[geoffr70]

I once had a duff battery that stunk very badly of eggs

[Bionic]

Hmmm,
The only time I have experienced the eggy smell was with a company Omega that some pratt had put leaded fuel into and it knackered the cats.
No doubt someone will have other causes or suggestions, just be patient.
GudLuk

[mark.adams]

Any 'Not Present' codes stored?

No codes stored currently, when the emissions light is on its the usual lean mixture code that omegas suffer from.

[mark.adams]

Fom the little I undrestand I thought the smell was normal from a new cat.

Al

I hadn't heard that, i hope it is that cause then i have nothing to worry about.