car mechanically good but recently a nasty smell is finding its way into cabin. Can only describe it as a cross between rotten egg gas and urine. Thought is was coolant dripping onto exhaust system. Has a burning smell to it. Sulphurish.
Local mechanic has pulled cat converter apart and says it is in good shape. He thinks it may be excess fuel going thru exhaust unburnt. I am not convinced. I thought smell was originating from under car but not sure. Most noticeable after you start the car and go to drive off - even with windows fully up and intenal vents on recycle. Not noticeable driving along. Mystifed at what is source of smell and how it gets into car (am very careful about keeping windows up before car is started).
no wet carpet, no coolant loss, oil is clean and free of coolant. Brakes work ok. no loss of engine power. Fuel economy seems ok. Possible heater prob? Or is is that cat converter or leaky exhaust? It is nasty smell that gets to back of throat quickly.
Your advice appreciated.
Local mechanic has pulled cat converter apart and says it is in good shape. He thinks it may be excess fuel going thru exhaust unburnt. I am not convinced. I thought smell was originating from under car but not sure. Most noticeable after you start the car and go to drive off - even with windows fully up and intenal vents on recycle. Not noticeable driving along. Mystifed at what is source of smell and how it gets into car (am very careful about keeping windows up before car is started).
no wet carpet, no coolant loss, oil is clean and free of coolant. Brakes work ok. no loss of engine power. Fuel economy seems ok. Possible heater prob? Or is is that cat converter or leaky exhaust? It is nasty smell that gets to back of throat quickly.
Your advice appreciated.
Apr 28, 2009 at 12:46 AM