W203 C class Toxic fumes in cabin now and again

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Badboysun

Active Member
Joined
May 23, 2008
Messages
68
Location
Sunderland
Car
C200 CDI Executive SE
My C class 180 compressor some times filles up with fumes especially after reversing in to a parking bay and sitting with the engine on, I took it to the main dealer who say engine oil had been spilt on the engine block, they steam cleaned the engine which reduced the problem, which does not happen often, mainly in the mornings when I rush to work, and after driving ten miles fast, park up by reversing, only to gasp as my throat burns, as toxing rush in. This problem does not happen when driving forward.
What could be causing this ? I'm wondering if the Catalytic converter is on its way out, or the air filters need replacing.
 
Does it smell of ammonia?
 

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