Will l fail NCT?

stop animal cruelty · 03-07-2018 12:34pm #1

My NCT is first thing in the morning. Got my car serviced last week....and what happens...the ignition, orge light comes back on.

Will I fail over this ?

wexie · 03-07-2018 12:40pm

Which light is it? When does it come on, does it stay on?

Generally (I believe) any lit up warning lights on the dash are a fail.

B-D-P-- · 03-07-2018 12:43pm

You'll fail.
But it will be a visual fail.
Free retest to show its fixed

Possible though the tester will overlook it. Happened me before

Toyotafanboi · 03-07-2018 1:21pm

With a petrol car a check engine light will pass, with a diesel car it will fail.

wexie · 03-07-2018 1:25pm

Toyotafanboi wrote: »

With a petrol car a check engine light will pass, with a diesel car it will fail.

Really?

Do you know why?

Toyotafanboi · 03-07-2018 1:33pm

They won't do the diesel smoke test if the check engine light is on. I don't know why but at a guss, traditionally I suppose diesel engines had higher compression ratio and fuel pressure than petrol cars so any failure from raising the rpm has the potential to be more catastrophic but that's purely a guess.

Leonard Hofstadter · 03-07-2018 1:34pm

wexie wrote: »

Really?

Do you know why?

Unless the light is on because there is a problem with the exhaust emissions, the malfunction light being on is not grounds for an NCT failure in a petrol.

Although it will probably be OK to pass an NCT, the light is on because there is a problem with the engine or one of the sensors for the engine, so it still needs to be looked at eventually anyway.

Toyotafanboi · 03-07-2018 1:37pm

Maybe they are lax on it but the manual does say if the light is on to decline to do the diesel smoke test.

George Dalton · 04-07-2018 6:47am

Toyotafanboi wrote: »

Maybe they are lax on it but the manual does say if the light is on to decline to do the diesel smoke test.

With the NCT and this issue it depends on the individual tester. Sometimes they will refuse to do the smoke test. Mostly they will go ahead with the test regardless. I have seen lots of diesel cars pass with the light on.

Toyotafanboi · 04-07-2018 7:18am

I agree, I think it boils down to whether in the testers opinion the engine otherwise looks/ sounds in good enough health to do the test. You couldn't confidently advise it's a pass though I wouldn't think.

Bmw123d · 04-07-2018 9:24pm

Toyotafanboi wrote: »

With a petrol car a check engine light will pass, with a diesel car it will fail.

This info is correct

stop animal cruelty · 04-07-2018 10:08pm

Passed ðŸ‘

Will l fail NCT?

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