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| D3 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again |
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5th April 2018, 11:21 AM
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MOT Fail - Emissions - Probably Cats
Hi There,
4.2 V8 Petrol ~162,000M Just had an MOT.....Failed Emissions on CO on Idle, 2nd fast Idle, Fast idle and HC/Lamda on the fast Idle. The Co points to the cats. I've had the Check Engine lights on for quite a while on both banks which I thought was odd (16814 & 16804)....I did try a few cleaners when I got the car, but since it's passed the two years previous MOTs I haven't been worried. I've got some toluene so I may give that a go and see if it gets better, but I'm guessing it's a pair of new cats ??? Any help, pointers etc Lee
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Current : 2005 A8 Sport 4.2 V8 D3 - LPG working! Previous : 1998 S8 PF 4.2 V8 D2 - Gearbox died ~120k 2002 S8 FL 4.2 40v V8 D2 Prins LPG - Engine valves met pistons ~230K Also : 1996 Jeep Grand Cherokee 4.0l (Post Apocalyptic makeover) 2003 Brabus Smart FourTwo (should sell) 2003 Mazda Rx8 2.3 (might sell) Last edited by ulfilias; 5th April 2018 at 11:26 AM. 
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