What spark plugs do you use?

[Pops848]

I'm interested to know what plugs you use, I changed mine the other week, NGK T sparks came out but the ones I bought from ECP were Bosch quad sparks. I'm wondering if they're killed my ignition coil so I'd be interested to know if anyone has quad sparks also?
I've a 2.4 V6 but interested to know all engine types (apart from diesel obviously haha )

 

[pauldazzle]

NGK are OEM. Always used them on all my VAG petrols without issues.

 

[Pops848]

NGK are OEM. Always used them on all my VAG petrols without issues.

T or quad spark?

 

[pauldazzle]

NGK Platinums.
Think these are correct for your engine.
NGK - PFR6X11

 

[Gazwould]

Iridiums are more conducive and as long lasting as Platinums .

 

[Pops848]

typical, iridium, platinum, all extra expense haha!

Well I've a misfire and changing coils, breather pipes and checking other vacuums, will replace plugs again if needs be but lets hope not!

 

[Gazwould]

Copper is even more conducive but not as long lasting .

 

[Pops848]

Copper is even more conducive but not as long lasting .

I wouldn't want to use copper for the fear of it being pinched from the local tea leaves! haha

 

[Retroman]

If they are they are among the correct plug choice for your car in the Bosch catalogue I doubt they would cause a problem with your ignition coil. What can cause a coil to fail is a badly worn or faulty old spark plug which is providing unnaturally high resistance. Were the old ones well past their “use by” date?

Many E36/E46 BMWs came off the production line fitted with one or two outer electrode copper spark plugs and if serviced today by BMW they would fit newer 4 electrode platinum ones. I have Bosch 4 electrode ones on my BMW Z3 and they are fine.

I didn’t realise you had a single coil pack on your engine – I wrongly assumed it had an individual coil pack for every spark plug and therefore, thought it unlikely that 5 or 6 would fail together. You could be onto something by deciding to put the coil pack under the spotlight.

 

[Pops848]

If they are they are among the correct plug choice for your car in the Bosch catalogue I doubt they would cause a problem with your ignition coil. What can cause a coil to fail is a badly worn or faulty old spark plug which is providing unnaturally high resistance. Were the old ones well past their “use by” date?

Many E36/E46 BMWs came off the production line fitted with one or two outer electrode copper spark plugs and if serviced today by BMW they would fit newer 4 electrode platinum ones. I have Bosch 4 electrode ones on my BMW Z3 and they are fine.

I didn’t realise you had a single coil pack on your engine – I wrongly assumed it had an individual coil pack for every spark plug and therefore, thought it unlikely that 5 or 6 would fail together. You could be onto something by deciding to put the coil pack under the spotlight.

I can't be sure of the old ones, I only got the car in December. Service history is very comprehensive so I'd imagine that they have been changed. There's receipts for plugs and a coil about 8 months ago, but there's nothing to say it was a OEM or Audi coil etc.

I found an vacuum leak and tested with VCDS yesterday, I measured block 32 and 33, 32 had no values what so ever so I think I have some faulty o2 sensors. Block 33 was measuring up to 8% for bank 1 control valve and up to 20% for bank 2 control valve. I noticed the PCV pipe from bank 1 to bank 2 was bodged, so I rebodged it as it had come lose until a new one arrives. Slight improvement but still a misfire on all cylinders.

As coil pack is a sealed unit I can't change or swap 1 over, so yes I'll try a new one today, if it doesn't fix the issue it's a vacuum and I can return it anyway i'm sure. Only from ECP but it's a HAAS one so should be ok.

Fingers crossed that this fixes it!