Tdi nct test disclaimer

frank gallagher

Is it true they make you sign a disclaimer when you bring in a diesel car ?

Del2005

Yes.

alo1587

Yes

colm_mcm

Yes, it's in case the engine goes wallop when they're testing the exhaust emissions

dougie-lampkin

I've heard it, it's in the NCT manual, but I was given nothing to sign when I tested mine in October.

MugMugs

This would be the one about the timing belt.... I'd wonder about that disclaimer..... One would assume that NCTS would still be liable for their employees negligence despite the disclaimer. Has anybody ever actually read one? What does it say?

Stheno

What's the difference between testing a diesel and a petrol for emissions?

is it that diesels have lower revs and the nct rev the bejasus out of them?

colm_mcm

MugMugs wrote: »

This would be the one about the timing belt.... I'd wonder about that disclaimer..... One would assume that NCTS would still be liable for their employees negligence despite the disclaimer. Has anybody ever actually read one? What does it say?

Revving the engine wouldn't usually wreck it, it's just to save bother I reckon. It would make any case against the nct pretty weak.

Diesels have rev limiters anyway

dgt

Stheno wrote: »

What's the difference between testing a diesel and a petrol for emissions?

is it that diesels have lower revs and the nct rev the bejasus out of them?

Smoke test as opposed to hc and ppm. They bring the engine up to its redline to test that.

I know when mine goes for it's test, I'll make sure it won't rev above 3k rpm. They won't be rebuilding it if it goes wallop!

sean1141

I think it just states you are agreeing the car is in a fit state to be tested and the timing belt has been replaced in accordance with the manufacturer recommendations. In other words if it snaps while they are revving the crap out of it it not there problem

Stheno

dgt wrote: »

Smoke test as opposed to hc and ppm. They bring the engine up to its redline to test that.

I know when mine goes for it's test, I'll make sure it won't rev above 3k rpm. They won't be rebuilding it if it goes wallop!

And they don't smoke test the petrols?

colm_mcm

It's a smoke opacity test that the rev the engines hard for. Doesn't apply to petrols

dgt

Stheno wrote: »

And they don't smoke test the petrols?

Well petrols don't produce clouds of black smoke (:pac:)

Petrols steam when cold but shouldn't smoke. Otherwise something is radically wrong!

Stheno

dgt wrote: »

Well petrols don't produce clouds of black smoke (:pac:)

Petrols steam when cold but shouldn't smoke. Otherwise something is radically wrong!

DUH! Sorry, having a stupid day Too used to petrols and don't pay attentions to diesels.

Must watch out when stuck in traffic behind a diesel (with the windows closed )

dgt

dgt wrote: »

...........

I know when mine goes for it's test, I'll make sure it won't rev above 3k rpm. They won't be rebuilding it if it goes wallop!

If it's the diesel you are referring to than they won't pass it

MugMugs wrote: »

This would be the one about the timing belt.... I'd wonder about that disclaimer..... One would assume that NCTS would still be liable for their employees negligence despite the disclaimer. Has anybody ever actually read one? What does it say?

How are they being negligent ?

dgt

Stheno wrote: »

DUH! Sorry, having a stupid day Too used to petrols and don't pay attentions to diesels.

Must watch out when stuck in traffic behind a diesel (with the windows closed )

Not to worry!

Generally diesels don't smoke much anymore, much cleaner emissions and rarely a puff of smoke from them

Except mine :pac::pac:

dgt

RoverJames wrote: »

If it's the diesel you are referring to than they won't pass it

There's 2 ways I do this: screw it right down or set the max rev screw really low. All mechanical, done in a few mins

Same crack with the DOE, if it can't rev, it can't smoke, it can't fail on that

Maybe other centres are different but that's how it is round here...

For the NCT they have to verify the rev limiter works when it should, if it doesn't they stop the test. If it can't rev it won't hit the limiter so you fail

pred racer

dgt wrote: »

There's 2 ways I do this: screw it right down or set the max rev screw really low. All mechanical, done in a few mins

Same crack with the DOE, if it can't rev, it can't smoke, it can't fail on that

Maybe other centres are different but that's how it is round here...

For the nct, the engine has to rev close to whats in the makers specs or it wont pass, to stop people turning them down for the test:pac:

GE90

What about newer cars that wont rev above 2.5k to 3k when in park or neutral ?

dgt

RoverJames wrote: »

For the NCT they have to verify the rev limiter works when it should, if it doesn't they stop the test. If it can't rev it won't hit the limiter so you fail

pred racer wrote: »

For the nct, the engine has to rev close to whats in the makers specs or it wont pass, to stop people turning them down for the test:pac:

Hmmmm, maybe they were up near the limit and I didn't realise it... Didn't fail so that's all that matters

Still didn't stop me turning it down though :pac:

nct tester

GE90 wrote: »

What about newer cars that wont rev above 2.5k to 3k when in park or neutral ?

there's a low cut off option for vw's, audi's , bmw's etc , that have a limiter on them. there is a by pass system on vw's and audi's to check whether they have a factory cut off or after market cut off. diesels are not revved to the limiter anyway.

Mar4ix

nct tester wrote: »

there's a low cut off option for vw's, audi's , bmw's etc , that have a limiter on them. there is a by pass system on vw's and audi's to check whether they have a factory cut off or after market cut off. diesels are not revved to the limiter anyway.

how to by pass that limiter ? on my wifes vw polo diesel, cant rev over 2.5 k, while parked, if start drive, press clutch and rev, then limiter not working.