mot test

pendulum

The MoT emissions test is a notorious cambelt killer and you will never prove that they revved it too much, because revving it high is part of the test
I always hate taking my diesel to the smoke test because they always rev the nuts off it.

Hammyman

vimot wrote: »

No the belt never snapped the timing changed position ( the belt jumped) yes its diesel

YOU CANNOT OVER-REV A DIESEL ENGINE ON THE MOT TEST. There are engine governers to prevent it. Revving it right up to the limit is part of the emissions test on the MOT - THEY HAVE TO DO IT AS PART OF THE TEST.

You have absolutely ZERO recourse against the test station. There are warning notices ISSUED BY VOSA which are displayed in all MOT stations stating that cambelt damage can occur during the diesel emissions test and if you're in doubt as to the condition you shouldn't have the test done.

Hammyman

cyclonebri1 wrote: »

One thing that is puzzling is why the engine was revved heavily??. Diesel engines are normally tested at lower revs than petrol, (I stand to be corrected on that). The only reason to rev it would be if it was cold at the start of the test, or if it was struggling with emissions do to "whooly" driving. Revving for a while can shift the soot and crap.
Either way precious little comeback, sorry,

You obviously know nothing about the diesel emissions test in the MOT. The engine is revved up hard to pretty much the rev limiter and held there for a set period of time.

Stigy

cyclonebri1 wrote: »

One thing that is puzzling is why the engine was revved heavily??. Diesel engines are normally tested at lower revs than petrol, (I stand to be corrected on that). The only reason to rev it would be if it was cold at the start of the test, or if it was struggling with emissions do to "whooly" driving. Revving for a while can shift the soot and crap.
Either way precious little comeback, sorry,

It's the other way around. Diesels are revved with the throttle fully open for the smoke test.

Hammyman

vimot wrote: »

there is no faulty tensioner the car was fully checked by kia and the result where the car was red lined. the same belt was put back on as there were no faults with the belt however the 4 injectors and the wire loom that goes on to them were burnt out at a cost to myself £1200

That damage wasn't caused by the MOT emissions test. An existing problem was the cause.

The engine management and governers mean you cannot redline a diesel. Yes you can hit the red bit on the rev counter but not to the point where you get anywhere near the engine damaging speed.

asbokid

vimot wrote: »

there is no faulty tensioner the car was fully checked by kia and the result where the car was red lined. the same belt was put back on as there were no faults with the belt

Cambelts do not jump without there being a fault, either with the belt itself or much more commonly with the tensioner.

Who fitted the replacement cambelt at 60k?

Was it, perchance, the same KIA dealership who "fully checked" the car after the belt jumped?

If so, it should come as no surprise that the dealership found no defect in the components used, and of course no fault in their workmanship.

forgotmyname

Dont forget the engine revs maybe higher than what you use but safely within the manufacturers limits.
Also its under no load compared to redlining it with a car full of people and headwinds to compete with.

If it wasnt safe to redline it then they would lower that figure with the limiters they fit. I have driven cars
and had the rev counter past the red section. Healthy engine should be able to take that.


Burning out the injectors and the wiring loom? Sounds like the car had issues before the test.

hartcjhart

Listen to Hammyman

Hammyman

hartcjhart wrote: »

Listen to Hammyman

The wife would disagree :D

EcoR1

vimot wrote: »

there is no faulty tensioner the car was fully checked by kia and the result where the car was red lined. the same belt was put back on as there were no faults with the belt however the 4 injectors and the wire loom that goes on to them were burnt out at a cost to myself £1200

If, and it's a very big 'if', the timing had slipped no self respecting garage would re-use the old belt. And on a diesel its virtually guarenteed valve damage would have occured.

Sounds to me like your fault is the wiring and injectors and whoever said the timing had slipped was talking rubbish.