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Author Topic: misfire under hard acceleration help!!!  (Read 10370 times)

Offline Tfsi_Mike

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Re: misfire under hard acceleration help!!!
« Reply #15 on: October 15, 2011, 07:09:53 pm »

Forum definately needs a missfire section  :sick:

Offline E30Dom

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Re: misfire under hard acceleration help!!!
« Reply #16 on: October 15, 2011, 07:20:29 pm »
New spark plugs fixed my miss-fire issue under load/boost...

Who did them, are they torqued correctly and correct make grade...
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Offline R-tech-Nick

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Re: misfire under hard acceleration help!!!
« Reply #17 on: October 15, 2011, 09:55:50 pm »
This might sound weird...check your oil.  Mine has had a mis-fire recently, shortly followed by the oil warning light. Its not done it since topping it up. Failing that logging will help

Have you had the missfire since your visit?

Nope not once since, the last time was the day before I came to you. It's a mystery  :laugh:

Strange one?

I have started to look in to these intermitent miss-fires / Hicups a little more.
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Offline hali

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Re: misfire under hard acceleration help!!!
« Reply #18 on: October 16, 2011, 11:02:24 pm »
had mine scanned and it said misfire cylinder 1 and 3,
but the plugs are around 3k old and coilpacks 1 week old,
might invest in some new plugs from vw was told there around £60 for bosch platinum
milltek tbe, amd stage 1, forge twin intercooler, forge dv

Offline Jaywoo-GTI

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Re: misfire under hard acceleration help!!!
« Reply #19 on: October 17, 2011, 09:03:53 am »
New spark plugs fixed my miss-fire issue under load/boost...

New plugs solved mine as well.

Offline E30Dom

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Re: misfire under hard acceleration help!!!
« Reply #20 on: October 17, 2011, 10:14:22 am »
But if you're seeing a missfire fault it's more likely coilpack as that's where the fault signal comes from... spark plugs didn;t show a fault on mine...
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Offline robdf2

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Re: misfire under hard acceleration help!!!
« Reply #21 on: October 17, 2011, 10:44:10 am »
But if you're seeing a missfire fault it's more likely coilpack as that's where the fault signal comes from... spark plugs didn;t show a fault on mine...

I think you are correct.
My missfire problems with my spark plugs have shown a cel but only when they are shot to pieces.
normally i just get the stuttering when trying to put the power down , but when they are nearly dead  i do get the flashing cel , and if i carry on trying to put the power down i do get the full on cel  :sad1:

funnily enough i have only had 1 coil pack failure and that was a full on cel , thats not to say the other packs are not on their way out.
2008 Chrono yellow Cupra

Offline PDT

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Re: misfire under hard acceleration help!!!
« Reply #22 on: October 17, 2011, 07:10:33 pm »

might invest in some new plugs from vw was told there around £60 for bosch platinum

Or buy from a local Bosch dealer for £3.20 each, exact same part as the main dealers sell for £12+

Offline Little_Dave

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Re: misfire under hard acceleration help!!!
« Reply #23 on: October 19, 2011, 09:02:51 pm »
So far so good  :happy2: had my plugs changed today and the car feels like its old self again, time will tell but so far no more misfires or stuttering  :drinking:

Dave

Offline 56OctyVRS

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Re: misfire under hard acceleration help!!!
« Reply #24 on: October 20, 2011, 09:24:24 am »
With you being stage 2+ you may need a step colder plug than standard. When increasing the power there is more heat in the engine and the spark plugs gets too hot and the tips or core burn out. Id opt for some plugs in the 8 heat range as they will cope with the extra heat better.
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Offline winrya

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Re: misfire under hard acceleration help!!!
« Reply #25 on: October 20, 2011, 09:31:37 am »
Plugs also fixed my occasional stutter/misfire.  Infact, it also fixed 100%  the shakes I had at idle and I feel like I've had a real boost in power and torque.  Old plugs looked shocking which makes me wonder if they are the originals and VW never changed them when they should have.  I bought the OEM NGK plugs which a 1 stage cooler.  So far I'm really pleased, car feels brand new again :happy2:

Offline hali

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Re: misfire under hard acceleration help!!!
« Reply #26 on: November 01, 2011, 06:22:06 pm »
just baught 4 new ngk spark plugs from alan day vw £54 fitted them and the car runs like new  :happy2: :grin:
milltek tbe, amd stage 1, forge twin intercooler, forge dv

Offline robdf2

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Re: misfire under hard acceleration help!!!
« Reply #27 on: November 01, 2011, 07:32:31 pm »
glad its sorted mate  :wink:
its a common problem hence why so many replies about changing plugs as the cure.

but you could have done it yourself for under £25!
2008 Chrono yellow Cupra