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Exhaust system blowing 300tdi

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matthew:

--- Quote from: "Porny" ---As far as I am aware, a Cat is not needed for the MOT as a diesel only undergoes a visual smoke check.
--- End quote ---


Not sure where you've been getting diesels tested but every modern diesel I've had tested for a few years (L,M, & R reg) has had a measuring probe shoved up the exhaust, and a printout of the results.
The visual test is for pre 1979 vehicles, engine age doesn't matter, :) my 1962 109" has a 1995 engine.

Porny:
Hrm, good point.....
(actually knew that thinking about it)
The probe measures exhaust smoke density, which is done whilst accelerating the engine to maxiumum unloaded speed. (hence why you need to ensure your cambelts been changed on time)

Even without a CAT, a 300 TDi should easily be able to pass the emissions test, as long as not too 'tweaked'.

A CAT was only fitted to certain models of the 300 Tdi, and those without the CAT still pass MOT's without any problems. (sorry david)


Ian

hobbit:
Trust you lot to start talking about broken exhausts, my 200 tdi snapped in half on the extension pipe underneath this morning, wondered why I had a lovely turbo whine.

Did a quick gas weld back together until weekend, got to take pieces off & braise them up properly with a metal sleeve, must admit it sounded nice though

With regards to gas testing, with some machines they only have to rev up once on the fast test, best thing is if timing belt is ok, is to oil and filter change, fuel filter too, wont do any harm to run some diesel injector cleaner through a tank of fuel before the test.

When going to the testing station give it a good run before turning up. Don't just arrive with a one mile jump from cold.

If you fail the test any or all of the above could make the difference.

Kev

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