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Fault Code P0302

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Driving home last night giving the car some beans and the EML+ engine management light came on, and the car started running like a bag of spanners. As I keep the code reader in the car I pulled in and read the codes as it was happening. I got back P0302 Cylinder 2 misfire, the spark plugs were done about a month ago (changed to denso), is it fairly safe to assume it's the Coil pack?, is there anyway to totally confirm that's the issue?.

 

I have 4 coils on order as my mate work at euro car parts and got a good deal, so I'm going to fit them when they arrive which leads to my next question are the coils easy to change do I need the special tool or can it be done without it. 

 

I stopped and started the engine and the car ran fine the rest of the way home, and on my way to work but I didn't put the car under heavy load, so it appears the issue only happen under heavy load will I be ok to drive the car till the weekend or might that do more harm?

Best that you do not buy anything until you remove the 4 spark plugs and inspect them.

See the condition after such a short time.

Check the tips and the gap on each.

 

Since you have them coming you still need the plugs out and checked.

 

The tool needed to remove the ignition coils is the same as when the plugs were changed, 

who changed them for you.?

 

You can make a tool, or use other methods to get the coils off, but best use the correct tool.

£12 or so.

Edited by GoneOffSKi

  • Author

A local garage did the plugs for me, I ordered the coil packs a few weeks ago as the price with my mates discount was too good to pass up (think they had 25% off then his discount on top), to be honest sometimes there was a slight hesitation on hard acceleration which was the main reason I changed the pugs (at the time cheaper option than the coil pack) so I suspect the coils are probably on there way out. Can you confirm where I can get the tool from?, in all honesty I may well just end up getting the trusted local garage to change the doils and check the plugs, as the engine bay seems very cluttered and I'm clumsy with big hands so not ideal lols

Probably Euro Car Parts.

http://awesomegti.com

Had them.

Draper Tools etc,  any VW Specialist Garage doing the job or good garage will or should have the Coil Removers.

 

I will post a poor pic of what i have as a home made one.

 

If you are going to get misfires to have the Emissions Light or the EPC come on and put the car into limp mode 

or disable the Turbo it usually is when under load on Supercharge and Turbo below 3,500 rpm.

Do not try it again until you check the plugs.

Hopefully no issue with Burnt Valves or the likes.  

post-86161-0-90239900-1463050775_thumb.jpg

post-86161-0-53598900-1463050819_thumb.jpg

Edited by GoneOffSKi

This is what the real McCoy looks like.

post-86161-0-89751900-1463051034_thumb.jpg

  • Author

Cheers ordered the puller so will try to check the plugs at the weekend :-)

the other question is , is it using oil?

It has a history of such.

http://briskoda.net/forums/topic/394291-after-some-advice-on-my-vrs

See post #31  Oil Spray Jets replaced, Software Update done supposedly.

 

Why the plugs need checked, but maybe the Head / Valves need checked.

It should be running a more recent Software Update at least from when it had major work done.

Edited by GoneOffSKi

scoobysn7x,

What warranty came from ARNOLD CLARK?   Is it valid now?

 

You might be best to look at making a claim on it.   Having a diagnosis carried out, a rebuild was not enough & will not be enough now 

if there are issues more than just Ignition coils.

 

They will very likely knock it right back, say no issues etc. They will try at least to.

 But that is not quite correct, there were known issues that had work carried out under a Skoda Warranty, or some other Warranty,

but then ARNOLD CLARK as a company knows enough about Fabia vRS as they have bought in enough faulty ones 

or supplied new ones that became faulty. 

  • Author

Thanks for the replies guys it seems to use oil but not vast amounts last top up about 0.5 litre of for 700 miles with mainly short journeys, last time was 0.5l in 950 miles with longer journeys, I got a three month warranty out with AC so that's pretty much up now, but I took out a full warranty with warranty direct that covers everything, I'm hopeful it is just a dodgy coild pack as its been running really well, and to be honest it has the exact symntoms of a leon FR I test drove (it broke down on the test drive) same chugging same code and that was identified by the garage as a coil pack. So I'll try changing the coils first as I already have them, and check the plugs when I'm changing the coils and take it from there.

 

To be fair to AC the work was not done at an AC garage, and there was no real details of the work done in Oct/Nov last year in the service history, I only got the info after researching with Skoda UK and the Skoda garage. Skoda garage also said it passed the consumption test after the work with no issues, and that if I suspected oil usage I would need to pay for a test and I would not get anymore good will from Skoda, but that they have saif 1 Litre in 600/800 miles is normal usage.

 

I'm keeping an eye on the oil consumption and if it gets worse I will get it to skoda for a consumption test

Edited by scoobysn7x

  • Author

Well after a frustrating afternoon yesterday I finally got this sorted, changed the coils and it ran much better, but once I gave it the beans it was very hesitant and the engine light came on flashed then went off did this each time I did heavy accelaration, but the EPC light didn't come on, read the codes now said Cylinder 4 misfire, but code went as soon as the engine restarted.

 

So I swapped the coils out on 4 to a spare new coil ( I ended up with five new coils (don't ask lols)). Went out again same thing again on heavy acceleration the engine light would flash and it would be very hesistant read the code and this time cylinder 3 misfire. At this point I was getting frustrated so I nipped down to a mates garage and got the codes read on a proper machine. He confirmed lots of misfire codes on all of the cylinders, and his guess was the spark plugs. Advised changed about 4 weeks ago to denso, he said defo spark plugs, and that these engine are very high strung, and in his experience they run much better on standard plugs. 

 

As he was busy (wouldn't be able to do anything on the car yesterday) I said I'd try check the plugs and try changing, so I popped to the skoda dealership as it was on my way home and got some plugs. I took the denso ones out they looked good, cylinder 2 was sooty but I think this may be down to the dodgy coil, but I did notice instantly when comparing the skoda oem (NGK) plugs to the Denso ones that the gaps were noticeably bigger on the denso ones, I checked the part no and they are defo the correct ones. Put the new NGK plugs in, and success no fault codes no engine or epc light, and my god its like driving a different car much smoother, feels much quick, all the hesitation has gone so I'm a happy boy again :-).

 

I'm not sure what happen with the denso's as a garage fitted them for me so I'm not sure if they were incorrectly gapped out the box, or the garage gapped them incorrectly.

Edited by scoobysn7x

What part number is the DENSO Plugs, did you get the VK20?, As Euro Car Parts show!

   I Never used them, i use the correct DENSO ones.

I have seen others mention using them and no issues.  

I like the ones that work best, and even last to what Skoda / VW say their OEM fitment should, 

and run great with Stage 1, Stage 2 or a Tuning Box.

 

As to highly strung and the Latest VW Recommended OEM plugs, 

they are certainly not Long Lasting,  but the Plug Gap has been changed since 2013.

 

?

Does your mate have much experience of 1.4 TSI / TFSI Twinchargers.

It is odd that his experience is that they run much better on Standard plugs.

 

?

Who fitted the Spark Plugs 4 weeks ago?  Ask them what the Gap was!

Edited by GoneOffSKi

  • Author

I got the Ones form Euro car parts, I cant remember the code I'll check when I get home, what should the code be?, maybe I got the wrong plugs VK20 rings a bell, my friend has worked on quite a few of the VW and audi varients.

VK20 is what they list cheap and supply.

  You need to check the GAP, and the gap can be put to 0.7 or 0.6 if you want.

 

Lots of VW / Audi techs have worked on quite a lot of Variants of 1.4 TSI /TFSI with Turbos, even some Twinchargers,

this is often the Issue, not enough working on the 1.4 TSI / TFSI 132-136 kW ones.

 

Audi Dealerships are known to fit DENSO Spark Plugs, while VW & Skoda say it must be NGK's.

  • Author

I'm going to invest in some feeler gauges and I'll check the denso's, hopefully the incorrect gap and maybe a dodgy coil will have been my issue, as I've change the coils and plugs I feel a bit more confident around the engine, so I plan to pull the plugs in a few thousand miles and see what they look like then, cheers for the help/advice

  • Author

VK20 is what they list cheap and supply.

  You need to check the GAP, and the gap can be put to 0.7 or 0.6 if you want.

 

Lots of VW / Audi techs have worked on quite a lot of Variants of 1.4 TSI /TFSI with Turbos, even some Twinchargers,

this is often the Issue, not enough working on the 1.4 TSI / TFSI 132-136 kW ones.

 

Audi Dealerships are known to fit DENSO Spark Plugs, while VW & Skoda say it must be NGK's.

DO you know the correct code of the Denso ones you recommend?

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