Make a donation

Author Topic: Misfire on a tfsi not plugs or coils  (Read 12491 times)

Lee M

  • Guest
Misfire on a tfsi not plugs or coils
« on: January 26, 2013, 04:52:43 pm »
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



Sent from my iPhone using Tapatalk

Offline GrayMK5GTI

  • Global Moderator
  • Just look at my post count
  • *
  • Thank You
  • -Given: 125
  • -Receive: 248
  • Posts: 4165
Re: Misfire on a tfsi not plugs or coils
« Reply #1 on: January 26, 2013, 05:02:17 pm »
If yours is a K03 engine, I'm selling an injector for £13 posted  :happy2:
NOW: 2015 Golf R DSG 5 Door, Lapiz Blue, 19s, Discover Nav, Reversing Camera
GONE:2007 Black GTI Edition 30 3dr

Offline chungster

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 6
  • -Receive: 33
  • Posts: 1963
Re: Misfire on a tfsi not plugs or coils
« Reply #2 on: January 26, 2013, 05:07:22 pm »
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

  • Guest
Re: Misfire on a tfsi not plugs or coils
« Reply #3 on: January 26, 2013, 06:39:05 pm »
If yours is a K03 engine, I'm selling an injector for £13 posted  :happy2:

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


Sent from my iPhone using Tapatalk

Lee M

  • Guest
Re: Misfire on a tfsi not plugs or coils
« Reply #4 on: January 26, 2013, 06:40:15 pm »
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?


Sent from my iPhone using Tapatalk

Offline chungster

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 6
  • -Receive: 33
  • Posts: 1963
Re: Misfire on a tfsi not plugs or coils
« Reply #5 on: January 26, 2013, 07:41:12 pm »
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?


Sent from my iPhone using Tapatalk

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 :happy2:

While that's off you may want to add the RS4 FPR  :wink:
« Last Edit: January 26, 2013, 07:42:59 pm by chungster »

Offline pd9264

  • Always Involved
  • ****
  • Thank You
  • -Given: 11
  • -Receive: 7
  • Posts: 210
    • Email
Re: Misfire on a tfsi not plugs or coils
« Reply #6 on: January 26, 2013, 07:49:05 pm »
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

  • Guest
Re: Misfire on a tfsi not plugs or coils
« Reply #7 on: January 27, 2013, 12:06:49 pm »
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?

Offline pd9264

  • Always Involved
  • ****
  • Thank You
  • -Given: 11
  • -Receive: 7
  • Posts: 210
    • Email
Re: Misfire on a tfsi not plugs or coils
« Reply #8 on: January 27, 2013, 07:06:23 pm »
in going to just change the faulty one. should be fine

Lee M

  • Guest
Re: Misfire on a tfsi not plugs or coils
« Reply #9 on: January 30, 2013, 11:23:34 pm »
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?


Sent from my iPhone using Tapatalk

Lee M

  • Guest
Re: Misfire on a tfsi not plugs or coils
« Reply #10 on: February 01, 2013, 02:08:21 pm »
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



Sent from my iPhone using Tapatalk

Offline vRSAlex

  • Admin
  • Just look at my post count
  • *
  • Thank You
  • -Given: 39
  • -Receive: 253
  • Posts: 2761
    • Email
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,19941.0.html
Re: Misfire on a tfsi not plugs or coils
« Reply #11 on: February 01, 2013, 02:17:22 pm »
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



Sent from my iPhone using Tapatalk

You need to buy a 'repair' kit part number 06D 998 907
www.akstuning.co.uk - info@akstuning.com - 01234 822324
Follow AKS tuning on Facebook

Lee M

  • Guest
Re: Misfire on a tfsi not plugs or coils
« Reply #12 on: February 02, 2013, 02:38:09 pm »
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



Sent from my iPhone using Tapatalk

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

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


Sent from my iPhone using Tapatalk

Offline bacillus

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 4
  • -Receive: 451
  • Posts: 6329
Re: Misfire on a tfsi not plugs or coils
« Reply #13 on: February 02, 2013, 06:40:58 pm »
Quote from: Lee M link=topic=60448.msg682185#msg682185
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

Quote
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?
Without traction power is nothing!

Offline ttdan

  • Taking part
  • ***
  • Thank You
  • -Given: 2
  • -Receive: 1
  • Posts: 40
    • Email
Re: Misfire on a tfsi not plugs or coils
« Reply #14 on: February 02, 2013, 06:49:38 pm »
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.