Quote:
Originally Posted by Ginger Teddy
... replaced the camshaft gasket and cam sensor ... new plugs, checked fuel filter ... I fitted the proper clip ... the purge control valve replaced ... 12 months ago ... I replaced the coolant temp sensor just as a matter of course ... I check plugs they are dry and no oil in the spark plug wells ... I fitted new coils and leads ...
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Wow, and you say Paul that you're no mechanic!
Well done, you appear to have cured the oil deposits on all four plugs. So what are we left with?
Quote:
Originally Posted by Ginger Teddy
This morning it ... coughed and spluttered ran for couple of seconds then stopped .... it does still start first time when engine warm.
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This doesn't suggest a component failure but more a "tuning" issue. As Ron says, check your sparking plug gaps. You haven't mentioned the air filter, what's that like? Look particularly at the air intake system after the throttle butterfly for leaks because an incorrect air-fuel ratio is likely to be the cause of the P0420 code.
Don't take it to the garage.
Simon