60,000km Spark Plug Change (1 fouled)

[PoloGTI6R]

Hey guys

So I changed the spark plugs over today as part of the 60K service, bloody hell that fourth plug is hard to get to (tip: get a VGA coil puller NEW 4pc Ignition Coil Remover KIT Spark Plug Puller VGA Vehicle CAR Tool SET | eBay

Car is a 2013 Polo GTI 6R

I used some new Bosch (iridium FR6HI332) plugs to replace the NGK's.

After finally getting number 4 out I noticed its quite black compared to the other 3. There wasn't anything noticeably wrong prior to changing them (except for the high oil consumption that is a hot topic) just wondering if anyone else has seen this?

Cant be spilled oil as the coil on plug protects the chamber very well.

[IMG][/IMG]


Car appears to be running well, but that fouled plug has me concerned.

Hope you guys find this interesting.

Cheers.

[ope126]

Bit hard to see, but are they OEM VAG Part No. 03C905601B?
Good tip about the coil puller also!

[ope126]

Also, were your Coil Packs Part No. 036905715G by any chance?

[NuffNuff]

did you have a miss or any hesitation at all? might be spark plug seal, looks like oil to me

[h100vw]

Makes me like the idea of using std sparkplugs and changing them more often. At least you get to see this kind of thing before the damage is potentially done.

If I feel a misfire, I replace the plugs. Might seem more labour intensive but it's a 10 minute job on my 9N.

Gavin

[idaho]

Does the PCV valve hose enter the intake manifold near the cylinder with the dirty plug?

[brad]

Makes me like the idea of using std sparkplugs and changing them more often. At least you get to see this kind of thing before the damage is potentially done.

If I feel a misfire, I replace the plugs. Might seem more labour intensive but it's a 10 minute job on my 9N.

Gavin

^^^^this^^^^

In the UK the dealers are recommending plug changes every 20,000miles! (30,000km). They've also got a new plug that is shorter.

looking at those plugs, I'd be changing / cleaning them a lot more often

[PoloGTI6R]

did you have a miss or any hesitation at all? might be spark plug seal, looks like oil to me

No misfires or noticeable hesitation, but I dont really drive it all that hard. Im getting a scanner soon to check for them though.

[PoloGTI6R]

Does the PCV valve hose enter the intake manifold near the cylinder with the dirty plug?

The Dirty plug was closest to the oil filler cap, so maybe it was spilt oil? BUt after closer inspection it appears to be excess carbon buildup on the electrode, but oil in the threads? Regardless, I will be keeping a close eye on it.

[PoloGTI6R]

Bit hard to see, but are they OEM VAG Part No. 03C905601B?
Good tip about the coil puller also!

Yes thats correct.

I honestly doubt anyone could remove those plugs without a VGA coil puller, they are bloody tight, and any other tool would destroy the coil. Just be very careful not to rip the wires of the coil plug.