Scirocco 2.0tsi misfire on tickover.

Technical discussion such as Bluetooth, Sat-Nav, iPods, tyres, brakes, all that kind of stuff.
Post Reply
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

My 47k mile Scirocco 2.0tsi petrol has started to misfire terrible on tickover.
Above tickover it runs ok most of the time but sometimes misfires all the way through the revs.
I've had it to a vw independent specialist who thinks it is the timing that is out (timing chain)but doesn't have the gear to do the job. He was a bit vague,as if he wasn't sure.He says take it to a main dealer!
I've spoke to someone else who is going to have a look Monday.
If it was the timing chain wouldn't it miss all the time?
Could it be the tensioner?

Any help appreciated.
Last edited by gord115 on Thu Jan 19, 2017 6:11 pm, edited 1 time in total.
Cuprabob
Posts: 5014
Joined: Sat Aug 07, 2010 2:31 pm
I drive a: GT 2.0 TDI 170/184
In: Rising Blue
With a: Manual box
Options: Panoramic Roof, 19" Black Luganos, Vienna Leather, Parking Sensors, DAB, Dynaudio, Bluetooth, Cruise, Folding Mirrors, Xenons
Location: S/W Scotland

Re: Scirocco 2.0tsi misfire on tickover.

Post by Cuprabob »

First thing I would check is the coilpacks quickly followed by the plugs.

The timing chain stretch can be checked on VCDS by the relationship of the data from the crank sensor to each cam sensor. If it was that bad it was causing a misfire I would have thought the EML would be on.

Connect to VCDS and see what faults come up.
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Re: Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

Apparently the coil pack is ok.
He said loads of fault codes came up though.
He was a bit vague as if he wasn't sure.
Cuprabob
Posts: 5014
Joined: Sat Aug 07, 2010 2:31 pm
I drive a: GT 2.0 TDI 170/184
In: Rising Blue
With a: Manual box
Options: Panoramic Roof, 19" Black Luganos, Vienna Leather, Parking Sensors, DAB, Dynaudio, Bluetooth, Cruise, Folding Mirrors, Xenons
Location: S/W Scotland

Re: Scirocco 2.0tsi misfire on tickover.

Post by Cuprabob »

If that's the case take it to someone with a bit more knowledge whether it be a dealer or specialist.
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Re: Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

Someone else having a look Monday.
Will let you know how I get on.
Cuprabob
Posts: 5014
Joined: Sat Aug 07, 2010 2:31 pm
I drive a: GT 2.0 TDI 170/184
In: Rising Blue
With a: Manual box
Options: Panoramic Roof, 19" Black Luganos, Vienna Leather, Parking Sensors, DAB, Dynaudio, Bluetooth, Cruise, Folding Mirrors, Xenons
Location: S/W Scotland

Re: Scirocco 2.0tsi misfire on tickover.

Post by Cuprabob »

Please do and I really hope it's not the timing chain, for your wallet's sake
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Re: Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

Cuprabob wrote:Please do and I really hope it's not the timing chain, for your wallet's sake
How much we talking?
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Re: Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

Update from guy who looked at my car,his receptionist has told me he didn't scan the car,he just thinks the timing is out due to the cam chain.
Apparantley he doesn't have the kit to do the job.
This is an Audi/VW specialist I have used for 13 years.
Technane
Posts: 246
Joined: Fri Nov 18, 2016 9:59 am
I drive a: GT 2.0 TDI 140/150
In: Deep Black
With a: Manual box

Re: Scirocco 2.0tsi misfire on tickover.

Post by Technane »

gord115 wrote:Update from guy who looked at my car,his receptionist has told me he didn't scan the car,he just thinks the timing is out due to the cam chain.
Apparantley he doesn't have the kit to do the job.
This is an Audi/VW specialist I have used for 13 years.
An Audi/VW specialist that can't scan a VAG.

he needs to be kicked out of the trade making that kind of claim! at the very least being a garage u'd expect him to have something that can scan the faults if not code the modules!
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Re: Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

What is scanning exactly?
When I first went to him he plugged in his laptop to the OBD port and said loads of codes were coming up. Is this the same as scanning?

Sorry for being a noob
Cuprabob
Posts: 5014
Joined: Sat Aug 07, 2010 2:31 pm
I drive a: GT 2.0 TDI 170/184
In: Rising Blue
With a: Manual box
Options: Panoramic Roof, 19" Black Luganos, Vienna Leather, Parking Sensors, DAB, Dynaudio, Bluetooth, Cruise, Folding Mirrors, Xenons
Location: S/W Scotland

Re: Scirocco 2.0tsi misfire on tickover.

Post by Cuprabob »

Yes, scanning is reading the data through the OBD port using a Diagnostic tool or diagnostic software such as VCDS.

Often there are loads of fault codes but the key is to understand and differentiate between cause and effect and which ones are irrelevant.

For example if you have low battery voltage that can trigger numerous fault codes in each of the Canbus Modules.

It can't be misfiring badly as if it was the unburnt fuel would trigger an EML as the Lambda probe would be reading high.

I would let the car tickover and disconnect each coilpack in turn and if you remove one and there is no change to how rough it's idling that's the cylinder that misfiring. I would then swap coilpacks over from another cylinder to see if the fault follows the coilpack or remains on the same cylinder and take it from there.
gord115
Posts: 9
Joined: Fri Jan 30, 2015 5:48 pm
I drive a: GT 2.0 TSI
In: Silver Leaf
With a: DSG box
Options: Parking sensors. privacy glass,uprated stereo,ACC.

Re: Scirocco 2.0tsi misfire on tickover.

Post by gord115 »

Ok. Just got a call off garage that has fixed my car.
It was the timing chain that had stretched-at only 47k!
Cost my £97 for chain kit and £250 for labour (mates rates)
Absolutely chuffed.
As for Volks-tek of Dronfield who didn't want to know,they have now lost a loyal customer after 13 years.

Thanks every one for your help.
C00kie
Posts: 98
Joined: Tue Sep 02, 2014 12:49 pm
I drive a: GT 2.0 TSI
In: Pewter Grey
With a: Manual box
Options: heated leather seats, DAB radio, rear privacy glass, rear parking sensors
Mods: Revo stage 1, Tarox G88 discs/Strada pads, Eibach Pro Kit springs, BCS sport catback system, K&N air filter, R8 coilpacks, interior LED lights, OEM LED number plate lights, pressed number plates
Location: Aberdeen

Re: Scirocco 2.0tsi misfire on tickover.

Post by C00kie »

I have a very similar issue...car shakes/judders every few seconds when ticking over. No EML and the rev counter is stable, not jumping. Only notice the problem when the car is idling once it has warmed up and revs have settled down to around 800rpm. Already changed all coilpacks and plugs, no difference.

Will post an update once I've had it looked at and (hopefully) sorted!
C00kie
Posts: 98
Joined: Tue Sep 02, 2014 12:49 pm
I drive a: GT 2.0 TSI
In: Pewter Grey
With a: Manual box
Options: heated leather seats, DAB radio, rear privacy glass, rear parking sensors
Mods: Revo stage 1, Tarox G88 discs/Strada pads, Eibach Pro Kit springs, BCS sport catback system, K&N air filter, R8 coilpacks, interior LED lights, OEM LED number plate lights, pressed number plates
Location: Aberdeen

Re: Scirocco 2.0tsi misfire on tickover.

Post by C00kie »

C00kie wrote:I have a very similar issue...car shakes/judders every few seconds when ticking over. No EML and the rev counter is stable, not jumping. Only notice the problem when the car is idling once it has warmed up and revs have settled down to around 800rpm. Already changed all coilpacks and plugs, no difference.

Will post an update once I've had it looked at and (hopefully) sorted!
So I had the local VW specialist look at it today and they couldn't find anything wrong with it. :mad: Scanned for errors - no faults, checked for air/vacuum leaks and all good seemingly. They said it could be an intermittent fault with one of the fuel injectors, but not worth replacing without knowing for certain as it would be pretty expensive.
Post Reply