PD170 with severe engine judder & knocking sound - any ideas?

Co2

Active Member
May 2, 2007
68
1
It doesn't only happen too others as they say. Guess this has been my time!

'07 Leon FR TDI, 80.000Km

Later today, commuting to the work place, half way there, going as usual around 90Km/h in fifth, the engine suddenly started juddering severely with a not so healthy knocking sound.

No warning lights of any kind came up. Judging by the dash, the car was fine.

Disengaged the gearbox into neutral, the symptoms continued so, coasted for a few meters and parked as soon as possible. Engine turned off.

Tried turning it on a couple of times after that, in between phone calls, and it kept the same symptoms. Severe juddering and knocking sound. Like an old engine when they start to rattle every joint they have. Also seemed to have some trouble turning over.

I had some important issues to solve and really had to get to my work place. Called a near family member which could provide a ride and left the car parked for a couple of hours.

Afterwards phoned the insurance company and requested a tow to the regular dealer where the car is serviced.

Started the engine to get it to the tow and also to check if still presented the same issues. As usual with technology, the symptoms were way inferior from what I had experienced earlier. The engine was also cold by now. It had a rough start but seemed to become better afterwards.

It's weekend, so I didn't want the car to sit parked away from home, neither was it helpful parked at my doorstep. It's the only one I have and I really need it. Don't really know if I exaggerated having it towed to the dealer as this has been the first time there have been problems that made me think twice before moving a car/using its engine but didn't want to take a chance and eventually end up paying a lot more.

It will be sitting at the dealer until Monday, when they are able to give a look as what may have happened.

The car has always been properly assisted at the spec'ed service intervals and on official dealers. It isn't driven like it has been stolen nor like if its the Vicar's car. Just a really regular use. The fuel tank was at half, so I guess fuel issues, like having bad fuel could be ruled out. And it also has been using the same fuel from the same pump for a couple of years now.

Out of curiosity, I'll have two days for any kind of info, have you guys got any ideas and theories on what may have happened?

I just really hope these aren't the dreaded injector problems.

:(
 

betty_swollox

Richie
Feb 15, 2011
5,497
7
Washington
SEAT UK are covering the costs for people have them replaced so if I was you I'd hope it WAS the injectors, rather than something else!!!

Good luck mate :)
 

Co2

Active Member
May 2, 2007
68
1
SEAT UK are covering the costs for people have them replaced so if I was you I'd hope it WAS the injectors, rather than something else!!!

Good luck mate :)

Unfortunately I'm not in the UK. And on top of that, the national Seat (VAG Group) representation hasn't got an outstanding rep when it comes to covering costs for faulty parts.

My car is the same and getting my injectors replaced on Tuesday so fingers crossed this is the problem.

The same as in having judders and an awful working sound?
 
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Marshall

Active Member
Jul 7, 2008
3,256
6
Bonnie Scotland
From your description it sounds much more terminal than an injector.
Knocking and bad to start and juddering sounds like its lost compression or something.

Sent from my HTC Sensation XE
 

Co2

Active Member
May 2, 2007
68
1
That never crossed my mind as I've always taken proper care of the engine. But indeed it is a possibility.

The only thing that comes to my mind is "ouch" if it turns to be that serious. I seriously hope not, as when it was being loaded into to the tow the engine, at cold, seemed slightly better.
 

Marshall

Active Member
Jul 7, 2008
3,256
6
Bonnie Scotland
Fingers crossed its diesel knock caused by injectors and Seat cough for the lot.
That would be a result for you.

Sent from my HTC Sensation XE
 

delboyuk2005uk

Active Member
Jan 25, 2009
377
0
St Helens
Only makes a juddering noise when it judders apart from that it's ok when it's not juddering.

Also when driving off for first time I need mak sure I need extra power from accelerator incase it stalls.
 

AndrewJB

Friend to SEAT UK & Cupra Racing
Aug 16, 2007
11,175
485
Maranello
Unfortunately I'm not in the UK. And on top of that, the national Seat (VAG Group) representation hasn't got an outstanding rep when it comes to covering costs for faulty parts.



The same as in having judders and an awful working sound?


Where are you based?
 

delboyuk2005uk

Active Member
Jan 25, 2009
377
0
St Helens
I am in the UK but I know you want to know where the other guy is based.

Hopefully Tuesday night after my injectors been replaced this will be the end of half the power of a suppose fast hatchback.

Fed up of now power and juddering and car won't go over 90mph in 6th at all.

Also when stop start need to put extra gas on the pedal to stop it from stalling.

Fingers crossed as need some good luck that this is the main sole problem.

With breaking up with my ex about a year ago losing the house money access to my child through depression finance issues paying for a house I don't even live in I need no more stress please haha.
 

AndrewJB

Friend to SEAT UK & Cupra Racing
Aug 16, 2007
11,175
485
Maranello
that sounds more terminal than injectors mate!

My car had rough injectors hence why it smoked heavily but it still had the power!
 

WeeG

Active Member
Nov 5, 2008
3,407
4
Largs , Ayrshire
I am in the UK but I know you want to know where the other guy is based.

Hopefully Tuesday night after my injectors been replaced this will be the end of half the power of a suppose fast hatchback.

Fed up of now power and juddering and car won't go over 90mph in 6th at all.

Also when stop start need to put extra gas on the pedal to stop it from stalling.

Fingers crossed as need some good luck that this is the main sole problem.

With breaking up with my ex about a year ago losing the house money access to my child through depression finance issues paying for a house I don't even live in I need no more stress please haha.

Injectors might be completly away and car in limp mode??? But does sound pretty fcuked:blink:
 

delboyuk2005uk

Active Member
Jan 25, 2009
377
0
St Helens
Started happening not from last service but the major service before!

Gotten worse now,had it hooked up the independent garage say no faults appearing so won't do anything!
 

Co2

Active Member
May 2, 2007
68
1
Got a call today from the dealer saying that I could pick the car up. Went there and had a chat with the manager.

Apparently, they can't find anything wrong with the car. Did all the tests and no errors on log, inspected the engine, took it for a test drive and it didn't miss a beat. Guess two days parked at the garage made him feel better. And yes, I wasn't underrating the juddering and I do know what an engine knocking sounds like!

I've already driven it and indeed, the car is working as it hasn't happened anything.

Don't really know what to think. On one hand, it's good. Means no mechanical faults and no expenses. But on the other hand, I think that I would have liked something to be wrong. At least that way it could be corrected and there wouldn't be any more doubts, like I'm having now, about if it will ever happen again. Guess it will take some time to regain confidence...

There isn't much more to say really. Except that I'm kind of embarrassed cause all of this, the guys at the shop must regard me as a paranoid overly zealous guy. In my defense, calling a tow is always the last option, you can just imagine the racket it was doing so that was my option.

I'll knock on wood three times and hope it doesn't do anything similar again. Cars are becoming more and more similar to computers.

:shrug:
 
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delboyuk2005uk

Active Member
Jan 25, 2009
377
0
St Helens
Had my injectors replaced.

Got there and they say the car has a sporadic fault.

Mis firing at 3000 revs.

So they want me to drive it see if its made it better or worse then book it back in as say will need a full day to look at the Mis firing fault.
 

delboyuk2005uk

Active Member
Jan 25, 2009
377
0
St Helens
So drove it harm the power seems to be there more when it's ok.

But when the juddering as they call it Mis firing happens its just not getting as much power when put my foot down.

Tried on motorway on way home and will keep Mis firing when try get above 80mph.
 
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