'05 Cupra R misfire

[Gooders]

I have recently bought a 2005 Leon Cupra R and it appears to have a misfire. The car has only done 25k and appears to have been well looked after but when you accelerate it seems to have a 'jerky' pull through the rev range...this is much worse when it is cold and can sometimes feel like it completly cuts out for a split second and then back on again...like i say once the engine is warm and has had a good thrapin' it seems to go away but it can still occassionaly feel quite 'jerky' ...please help

oh, I have changed the plugs and to be honest they looked fooked but its still doing it

any ideas?

 

[markbrum]

get it vag-com..sounds like a coil issue to me

 

[CupraMVR]

sounds like coil pack aswell

where abouts you based ?

 

[Gooders]

correct me if im wrong but wouldn't it just be firing on 3 cylinders al the time if it was a coil pack gone?

 

[markbrum]

depends if the coil or coils are breaking down ...my coil failure was sudden proper **** myself...didnt realise either that it had taken number 2 coil with it aswell but only very slightly. you could hardly notice it wasnt until i got it scanned that it showed up

 

[Gooders]

oh i also meant to mention that ive put a bailey recirculating valve on it to replace the standard bosch one....i thought recirculating values were silent?

...mine still makes a ssssssch noise when you lift off....not quite as loud and aggressive as a dump valve though

 

[Gooders]

how much is it to replace the coil packs?...do you recommend replacing them all or just individual ones?

 

[turbin]

do all of them. Or worst case 1 and 3 then 2 and 4 later.

 

[Gooders]

think i will get them all done by the sounds of it...how much do they cost?

 

[adam cupra 20vt]

Around £30 each for genuine ones.

 

[kylestyle09]

Coil pack.. happened to me!! Get all of them replaced.. I replaced one, then it was a bit better, so just get all 4 done as it will happen to them all!!! Nothing serious

 

[Gooders]

had my car checked out by the boys at JBS and it has come back with a Lamda sensor (front) fault...replaced it and the beast is runnin' schweeeet!

....everyone thought is was the coil packs so may just be worth remembering if anyone has a similar problem, thanks for your replys