UK Legacy failed emissions test

Help !!!!

Uk spec 2.0 turbo 4 cam 1993 Failed Uk Mot test due to emmisions off the scale !!!!! Air and oil filters have been changed as have the plugs ( not an easy job ) Anyone got any ideas anyone ??

Ps occasionally smokes when started but runs and performs ok.

Reply to
Neil
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Update !!! Have now found out that the Oxygen sensor is to blame for the high Lambda readings and have tried a Bosch universal part as a replacement but this has the wrong connections so its gonna need an expensive Scooby part . Does anyone know of a source of good quality Scooby bits in the UK that might beat Subaru themselves ?? I live in South Northants area but will travel to get the right parts. Big thank you to all who have tried to help so far - ive given it a dose of additive and had already tried the hooligan bit Marcus (good fun as its a quick beast when you poke it with a stick !!!) but its not worked yet. It does have a Cat but all who have looked at it say its ok. Neil

Reply to
Neil

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