MOT emissions test blew the turbo

Biketrials08

Hammyman wrote: »

If it redlined then the engine governor was faulty. It is up to the owner to ensure the vehicle is fit for the test.

If the turbo failed then that is because you have taken absolutely no notice of what is in the owners manual about leaving the engine idling for a minute or so when you've been on a journey to allow the turbo to cool so it was already virtually dead before it went in for the test and the test was the final straw - it would have happened in the not too distant future anyway.

Seriously, I'd be surprised if a 110bhp diesel Mondeo would have such a stipulation in the handbook, diesels don't produce the heat levels in turbos like pertrol cars do and then that's more of an issue with higher output petrol turbo's. To the OP, it's unfortunate but 93k out of a turbo isn't too bad, admittedly it's nothing to shout about though.

Lum

attila_ wrote: »

garages have a warning sign regarding smoke test (or should have). It basically says its not their responsibility if the cambelt goes etc. I cant remember seeing anything about turbos but i am sure they are covered.

This, every garage has this sign up in the MOT area.

The turbo was likely due to go anyway, possibly due to poor maintenance/driving or possibly just due to age/luck/something else failing.

KTF

Biketrials08 wrote: »

Seriously, I'd be surprised if a 110bhp diesel Mondeo would have such a stipulation in the handbook, diesels don't produce the heat levels in turbos like pertrol cars do and then that's more of an issue with higher output petrol turbo's. To the OP, it's unfortunate but 93k out of a turbo isn't too bad, admittedly it's nothing to shout about though.

I will check the handbook when I get the back back out of interest but I agree. This isn't exactly a 'high performance' car that needs a turbo timer or the like. Given the number of cars with turbos these days (both petrol and diesel) if this was the case then there would be a lot more failures.

I think it was just a case of the turbo failing due to age more than anything else. Thinking about it I had noticed that it had occasionally 'hesitated' when accelerating or when the cruise was trying to maintain the speed and there had been puffs of greyish smoke from a cold start which all points to the turbo not being as healthy as it should be.

Hammyman

For the love of god....

EVERY SINGLE TURBOCHARGER WHETHER PETROL OR DIESEL NEEDS TO DO THIS. It has nothing to do with whatever the output of the turbo is and everything to do with the fact it is bolted to a red hot inlet manifold as that generated the heat, not the turbo. If there isn't oil circulating it kills the bearings. Most turbos die from the bearings packing in long before the blades have worn.

bungle4by4

hey, bad luck OP. damm shame.

you have a few of the holier than thou, google powered know it all's posting on this thread. one of them in my block list. so take their no doubt 'its all your own fault' mindless ramblings with a pinch of salt..

mikey72

Hammyman wrote: »

For the love of god....

EVERY SINGLE TURBOCHARGER WHETHER PETROL OR DIESEL NEEDS TO DO THIS. It has nothing to do with whatever the output of the turbo is and everything to do with the fact it is bolted to a red hot inlet manifold as that generated the heat, not the turbo. If there isn't oil circulating it kills the bearings. Most turbos die from the bearings packing in long before the blades have worn.

Utter rubbish as normal.
Have you ever been under the bonnet of a car? Bolted to a "red hot inlet manifold"
Maybe you need to look at one, where the turbo is stuck before the inter cooler, then the air pipe runs into the inlet manifold.
Mine has run happily for 14 years so far.

marlot

Hammyman wrote: »

...bolted to a red hot inlet manifold ...

Slight typo there - you meant bolted to the exhaust manifold surely!

(not that mine runs red hot).

SailorSam

I had a diesel Cavalier years ago and i remember being worried watching them rev it at the Mot, he told he i needed to drive it harder, especially before a test, he told me to go for a drive down the motorway and really put my foot down.

Hammyman

mikey72 wrote: »

Utter rubbish as normal.
Have you ever been under the bonnet of a car? Bolted to a "red hot inlet manifold"
Maybe you need to look at one, where the turbo is stuck before the inter cooler, then the air pipe runs into the inlet manifold.
Mine has run happily for 14 years so far.

Sorry, I meant exhaust manifold. Please excuse me for having the cheek to post after I'd been up 48hrs straight....

As a qualified mechanic, I am aware of how a turbo is hooked up, thankyou very much.

Hammyman

marlot wrote: »

Slight typo there - you meant bolted to the exhaust manifold surely!

(not that mine runs red hot).

Indeed. I had been up 48hrs straight and maybe posting on here wasn't the best thing to do, lol.