Misfire on a tfsi not plugs or coils

[Lee M]

Hi all.

2.0 tfsi cupra:

I have a misfire on cylinder 2. Mainly on idle or low speeds and more noticeable  after its warmed up.
I have replaced plugs  this morning as I though it was that. My last set died at 15k and I've done about that since then. New plugs are up rated/colder iridium NGk as I'm running 2+.
Tried swapping coil packs between cylinders and that made no difference either, fault stays on cylinder 2.
Monitoring the misfire counter using VCDS it counts about 60-80 misfires in about 2 mins.

Am i looking at an injector fault as the next thing to look at?  If so where are they located?

Cheers. Lee



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[GrayMK5GTI]

If yours is a K03 engine, I'm selling an injector for £13 posted 

[chungster]

Had this prob on cylinder 1 recently. Injector was at fault.

PITA job though as its intake manifold off job as injectors are under that!

[Lee M]

If yours is a K03 engine, I'm selling an injector for £13 posted 

Hi mate. Unfortunately not. It's a ko4 cupra. Cheers though.


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[Lee M]

Had this prob on cylinder 1 recently. Injector was at fault.

PITA job though as its intake manifold off job as injectors are under that!

That's where I thought they were from what I could make out. What a sh1tter. Is it doable DIY or did you get a garage to do it?


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[chungster]

Had this prob on cylinder 1 recently. Injector was at fault.

PITA job though as its intake manifold off job as injectors are under that!

That's where I thought they were from what I could make out. What a sh1tter. Is it doable DIY or did you get a garage to do it?


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Had Alex @ AKS do mine - no way would i attempt it myself! I watched him put the manifold back on and getting it all lined up with the long studs is a PITA it seems! PM him if you want an estimate for supply and fit if you're near bedfordshire

While that's off you may want to add the RS4 FPR 

[pd9264]

im in the same boat. got a serious misfire on cylinder 4. AKS changed plugs and coil packs to see if it cured the problem. but he nailed it down to a faulty injector. they ent cheap though about 150-160 + vat for one. i fitted them myself and they are a pain to do.

[Lee M]

im in the same boat. got a serious misfire on cylinder 4. AKS changed plugs and coil packs to see if it cured the problem. but he nailed it down to a faulty injector. they ent cheap though about 150-160 + vat for one. i fitted them myself and they are a pain to do.

Cheers mate. Sounds like a mission but I guess I have no choice. I've done all the easy checks and changes.

Did you change all 4 or just the faulty one?

[pd9264]

in going to just change the faulty one. should be fine

[Lee M]

Ok all. I'm just listing out bits I need to give the injector replacement a go. I'm going to clean the valves too If they need doing whilst its off.

Any pointers or things to consider replacing/checking whilst manifold is off?

I'm going to get:

New intake manifold rubber gasket
Blue Injector seals for the other 3 injectors (injector to fuel rail)
Rs4 valve? Whilst its off

Anything I've missed?


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[Lee M]

I can't buy the injector blue seals separately, that fit into fuel rail.  I'm presuming its ok to re use the ones in the injectors I'm not removing?

Cheers



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[vRSAlex]

I can't buy the injector blue seals separately, that fit into fuel rail.  I'm presuming its ok to re use the ones in the injectors I'm not removing?

Cheers



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You need to buy a 'repair' kit part number 06D 998 907

[Lee M]

I can't buy the injector blue seals separately, that fit into fuel rail.  I'm presuming its ok to re use the ones in the injectors I'm not removing?

Cheers



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You need to buy a 'repair' kit part number 06D 998 907

Thanks mate. I've got them ordered. :-)


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[bacillus]

I can't buy the injector blue seals separately, that fit into fuel rail.  I'm presuming its ok to re use the ones in the injectors I'm not removing?

Cheers

You need to buy a 'repair' kit part number 06D 998 907

Thanks mate. I've got them ordered. :-)

How much are they charging you as I'm pretty sure I have a set somewhere?

[ttdan]

Had an idle misfire on my ed30, cyl 4, was a bad injector at 44k miles, vw did it for 2 hours lab + parts, + 30 mins diagnosis time, not terrible I thought.  But disappointing on a low ish mile engine.