Dexcossie

Hello
Sorry if my message is a bit long winded but I’m after some advice reference my Sierra sapphire 4x4 cosworth 1993. I recently had a MOT on the car and it failed on emissions. Not too worried about this as the car has been sitting for about 3 months with half a tank of old fuel and redX in the tank which more than likely didn’t help with the emission test. What really concerned me is the person who was carry out the test said the car should have catalytic converter fitted to the car. I’ve owned this car since 2003 and it has never had a catalytic converter, when I purchased it was fitted with a mongoose stainless steel exhaust system with no CAT. So my question is should my cossie be fitted with a CAT ? I’ve looked on the internet and there seems to be conflicting opinions about this as to the year CAT’s were fitted to ford cosworths. The other question I have relates to type of engine in my car i.e is it a YBG or YBJ engine ?, the rocker cover is green hence I believe my engine might be a YBG but im not sure. Is there any way I can check to confirm what type?

Thanks Dex

Ian e34 m5

good luck with that you either need to prove she was built before the cat designated cut off point or show the tester some proof the engine has been replaced with an earlier example most cossies will have had an engine change but the tester needs some kind of proof to follow the rulebook

fatboy billy

Go to a different place for an mot

Marc sierra

iTrader: (1)

The YBG (with cat) was introduced in 1990, but I believe only the YBJ (without cat) was available in UK at the start. But the fact that it has a green cam cover probably means it's a YBG, I've never seen anyone change a red cover for a (IMO ugly) green one.

The Youth.

iTrader: (1)

the green top cat equipped cars were introduced in early 1992 so yes your car would have had a cat from new.

as for an mot requirement yes it should but you might get away with it at a different garage if not you need to buy one!


Steve

stevieturbo

There is no conflicting info, from Aug 1992 all cars, minus a very few exceptions are required to have a cat and pass the relevant MOT test.

And a Cossie that had a cat from new before that, is certainly not one of those exceptions and never has been