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Author Topic: Missfire  (Read 5603 times)

northyracing

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Missfire
« on: April 25, 2013, 03:23:41 pm »
I have posted numerous times about a lumpy idle but have now noticed that's its not all the time now so I got myself vag com and it shows a missfire on cylinder 2 but like only a few misfires I swapped cylinder 2 coilpack onto number 4 but still misses on 2 so that rules out the coilpack that's faulty any suggestions
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Offline Tfsi_Mike

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Re: Missfire
« Reply #1 on: April 25, 2013, 03:28:15 pm »

Swapped the spark plug?

If it still stays on that cyl, then injector...
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northyracing

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Re: Missfire
« Reply #2 on: April 25, 2013, 03:56:01 pm »
No I ain't tried that one actually I will try that next it only does it every now and again so hopefully it's a plug not injector
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Offline 56OctyVRS

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Re: Missfire
« Reply #3 on: April 25, 2013, 05:06:47 pm »
As Mike says, try changing the plugs.
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northyracing

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Re: Missfire
« Reply #4 on: April 25, 2013, 07:06:40 pm »
Changed the plugs around from 2-4 and 1-3 and still gettin misfire on cylinder 2
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Saintsteve

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Re: Missfire
« Reply #5 on: April 25, 2013, 07:57:31 pm »
Quote from: northyracing on April 25, 2013, 07:06:40 pm
Changed the plugs around from 2-4 and 1-3 and still gettin misfire on cylinder 2

Mine has this on cylinder 4 on idle only.Causing cold start poor running and idle speed missfire.

it improoved recently with Terraclean and injector cleaner but its slowly coming back.

Car is at JKM currently being investigated.

Sounds like you have a possible injector failure like I think mine is.

Will know by tomorrow from JKM what's the fault is for deffo.
« Last Edit: April 25, 2013, 07:59:38 pm by Saintsteve »
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Offline Tfsi_Mike

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Re: Missfire
« Reply #6 on: April 25, 2013, 08:18:27 pm »

I had the same issue on cylinder 3.

Only thing to cure it was a new injector.  It was perfect after the new injector.
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Saintsteve

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Re: Missfire
« Reply #7 on: April 25, 2013, 08:23:17 pm »
I hope it's just that..Phylis sounds like a Subaru flat 4 from cold at the mo  :sad1: rough as a badgers arse
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northyracing

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Re: Missfire
« Reply #8 on: April 25, 2013, 08:34:30 pm »
Mine only missis on idle and slow speeds then clears once above 2000rpm and runs sweet as a nut
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Saintsteve

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Re: Missfire
« Reply #9 on: April 25, 2013, 08:36:38 pm »
Quote from: northyracing on April 25, 2013, 08:34:30 pm
Mine only missis on idle and slow speeds then clears once above 2000rpm and runs sweet as a nut
Identical fault to mine. Totally fine on the road, upto 1800 rpm and below it missfire's.

Turn on the aircon, it improves, turn off the aircon, its misfires on average about 60 times a minute
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Offline Tfsi_Mike

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Re: Missfire
« Reply #10 on: April 25, 2013, 08:37:45 pm »
Mine always counted misfires a idle.  The misfire under high load was very intermittent but was gradually getting worse.

It started as misfire at idle only.
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northyracing

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Re: Missfire
« Reply #11 on: April 25, 2013, 10:06:18 pm »
Bloody cars lol it's more annoying than actually being a problem one minute it's fine next it's like someone is rocking the car slightly
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Offline edd666999

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Re: Missfire
« Reply #12 on: April 25, 2013, 10:25:09 pm »
Where do I go in vcds to see misfires?

It hasn't logged an error code...
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Offline Tfsi_Mike

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Re: Missfire
« Reply #13 on: April 26, 2013, 06:35:11 am »

Mine logged in auto scan but also in basic measuring (blocks 14 & 15 from memory) the miss fire stopped counting when I pressed the throttle but its because detection was disabled when the throttle was pressed from what I could see
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Offline GrayMK5GTI

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Re: Missfire
« Reply #14 on: April 26, 2013, 07:30:24 am »
I haven't heard of any K03 GTI injectors failing, just K04 engines.

I'm trying to sell a K03 injector as I bought one as a "just in case"  :wink:

Graeme
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