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[zYx]

That device supports live data, however it shows nothing when connected to my omega other than those two error codes.

Pedal trick is notably more reliable than some code readers. I'd ignore the code reader here tbh.

Did the car refuse to start In the video? It didn't sound good at the end.

Its worth further investigation before buying parts IMO, you need a bit more info to go on. (As as Mark Dtm says.)

The car starts fine, no issues at all. It just runs like it was going to explode any minute. This actually happened when I was driving once before. It was fine after I switched the engine off and on. This time it also happened when I was driving, this is how I got home, about couple of miles, but a simple off/on didn't help and now it runs like it.

When I bought the car I don't think those coils were even replaced since the card left the factory and I certainly didn't do it. I'm the second owner.

I don't have a problem getting new parts, especially when it comes to plug business only because I know it was never replaced, so perhaps now is the time.

What else could be wrong? The MAF sensor is rather fine as I replaced it (with genuine bosch) about three years ago and I am aware what kind of behaviour to expect when it fails, so I believe the MAF is OK.

The mileage is about 95k.

Anyway, what do these codes actually mean? There's 6 codes, but 0304 missing?

[chrisgixer]

...any missfire, once detected by the ecu will cause that cylinder to shut down on the Dbw engines.

This is then reset on restart. And the engine light then goes out. All normal missfire behaviour on Dbw engine.

Question is, what's the cause?

On a different slant, it sounds like the plugs at least may be passed there service life? What's the history/mileage/since in the plugs where last changed?
How many miles on the car?

[05omegav6]

So plugs are potentially 11 years old

I would probably replace them regardless tbh... Even if they're not the actual cause, they won't be helping

The official line is 80k/8 years, but the suggested wisdom here is 40k/4years for quads and half that for twins

Presumably the oil and filters have been changed a few times

[zYx]

...any missfire, once detected by the ecu will cause that cylinder to shut down on the Dbw engines.

This is then reset on restart. And the engine light then goes out. All normal missfire behaviour on Dbw engine.

Question is, what's the cause?

On a different slant, it sounds like the plugs at least may be passed there service life? What's the history/mileage/since in the plugs where last changed?
How many miles on the car?

I added/edited some additional info above. The car has about 95k and like I said I didn't replace any plugs since I owed it (6 years) and I don't believe this was done prior to me owning this car either.

I try to look after my car as much as I can I just never did the plugs as it appeared to be fine.

So plugs are potentially 11 years old

I would probably replace them regardless tbh... Even if they're not the actual cause, they won't be helping

The official line is 80k/8 years, but the suggested wisdom here is 40k/4years for quads and half that for twins

Presumably the oil and filters have been changed a few times

Yes, quite possible, 11 years. Don't know for sure.

The oil/filters and everything else was done regularly, just not plugs.  I dont like touching things when they work fine :> I understand the plugs should be changes every so often, but the engine was running so nice.

[chrisgixer]

0300 is random multiple missfire.

0301 is misfire on pot 1
0302 is misfire on pot 2

And so on.

So you have misfires on every cylinder except pot 4. Although it takes a considerable miss for the ecu to detect it, so odds are 4 is affected too.

If the plugs are beyond service life, they need changing anyway. Inspect the coils then. See how you go?

[zYx]

0300 is random multiple missfire.

0301 is misfire on pot 1
0302 is misfire on pot 2

And so on.

So you have misfires on every cylinder except pot 4. Although it takes a considerable miss for the ecu to detect it, so odds are 4 is affected too.

If the plugs are beyond service life, they need changing anyway. Inspect the coils then. See how you go?

Oh I see, so the coils could still be fine?

You see, when I first spotted that engine light I asked my neighbour for his reader and this is when it showed me P0047 and P1625 codes for the first time. I didn't bother checking the pedal trick then and those error codes mislead me... so I was driving like this for several weeks....

[Marks DTM Calib]

I would do NOTHING until you have fixed the fault, you could fit coil packs and plugs, have an issue with the new parts and create a deeper hole.....

New parts and uneccassary work adds further unknowns to the mix 

[05omegav6]

Mark, would removing the plugs for inspection not show anything, or does the fact it's misfiring instantly mask everything else? 

[chrisgixer]

I would do NOTHING until you have fixed the fault, you could fit coil packs and plugs, have an issue with the new parts and create a deeper hole.....

New parts and uneccassary work adds further unknowns to the mix 

Masters cheating again, he has tech 2

(He's not usually wrong though)

[mrgreen]

could it have slipped a tooth on the cam belt? when you start it at night and look under the bonnet can you see anything shorting out under there, i run my 2.2 on crappy 95 austrian fuel and have never had a problem, i would be suprised if the gas caused this.

[zYx]

Finally the plugs arrived and as I took one of the coils out I saw this:
https://copy.com/PT7nFltmmGur

Do you think there is any point putting it back together or should I just go and get new coils?

The old spark plugs didn't look good either.

[05omegav6]

That goes along way to explaining the misfire on cylinders 1 and 2...

As a rule of thumb, slight rusting is ok, cracking of the plastic casing is a sure sign of significant rusting

Personally, I would replace them Order the ones I linked to from the States, and temporarily refit those ones, unless you don't need the car, in which case, ensure the plug wells are covered and leave them out. Be sure to give the coilpack plugs on the loom a good squirt of WD40 now, and when you fit the new coilpacks to ensure no moisture in them as well

[zYx]

I've put it together and the engine is still not running fine. I checked the error codes and now it reads 0300, 0305 and 0306. When looking at the exhaust theres blue smoke coming out the left pipe cylinders 2-4-6, not too much, but it was noticeable.

I added a few more pics: https://copy.com/PT7nFltmmGur

[Gaffers]

That coil looks suspect and the plugs are showing signs of significant rust.  Looks like water has gotten to the coil and plugs at some point and there is evidence of a small oil leak starting which would suggest the breathers starting to clog up and need cleaning.  The water is most likely from a leaking scuttle so that needs sorting before anything else.

[zYx]

I got a tree above my car at home and at work. I keep having to clean this mess. It's very annoying.

I found those on ebay: http://www.ebay.co.uk/itm/321055804241 and http://www.ebay.co.uk/itm/321055804227 £168 UK. Customs can be pain in the arse... but then the import charges are already calculated here. Did anyone order from an auction like that? Dows it guarantee you won't have to pay here in UK? http://www.ebay.co.uk/itm/310814479361

I don't really need a car so I'm no in rush. I just hope this is nothing serious.