Green spark plugs

[SpeedProtocol]

Changed my plugs. The ones on the drivers side seemed to have some of this green corrosion looking crap. I cant remember which two were the worst but they were on the drivers side.The connectors up in the coils looked ok. Did water or coolant somehomehow get in these spark plug wells?

I didn't have codes before or after. 30k miles.

Any ideas?

[M5Rick]

^ From leaky turbo coolant pipe hoses probably or a mechanic spilt some a/f while topping up. Those coolant pipes need to be checked regularly.

[SpeedProtocol]

The turbo lines look almost brand new. All of the coolant reservoirs seem to have proper coolant. Maybe it leaked in the past. Ive only had the car a few thousand miles.

I just wanted to make sure there was no way coolant can leak from the heads on these cars into the spark plugs holes. I know oil can on this design but I wasn't sure about coolant.

[M5Rick]

Originally Posted by Droner

The turbo lines look almost brand new. All of the coolant reservoirs seem to have proper coolant. Maybe it leaked in the past. Ive only had the car a few thousand miles.

I just wanted to make sure there was no way coolant can leak from the heads on these cars into the spark plugs holes. I know oil can on this design but I wasn't sure about coolant.

Just wanted to ask,have you an air line that you gave the spark plug holes a good blast before you removed the old ones..

[SpeedProtocol]

No, I only noticed after i pulled the plugs out. The coils didnt tell much of a story to. Harder to remove but its not like the stuff was all over the coils.

[M5Rick]

Originally Posted by Droner

No, I only noticed after i pulled the plugs out. The coils didnt tell much of a story to. Harder to remove but its not like the stuff was all over the coils.

I was only asking because I'm doing my plugs soon and picking up little things before I do it.
Another thing I wanted to ask was what gap did you set your standard plugs at, they are set at the factory but it's wise to check before you put them in.

[SpeedProtocol]

.032

They came pregapped at that and I double checked. The ones I pulled out were also .032. As long as they are all the same, I have read of bmw gapping them all the way down to .028 on spark plugs.

And if you want to save yourself some money the bosch ZR5TPP330A has superseded the ZMR5TPP330. It is perfectly fine to use the newer plug. fcpeuro has them for 5.87$ each. Newer and cheaper.

[AisteLau]

Kit includes:
8x BOSCH 0261500262 RP injector EU6
8x BMW 13537577649 Decoupling element
8x BOSCH 0242145541 High Power Spark Plug
8x BOSCH 0221504470 Direct Ignition Coil
2x BOSCH 0258017187 Upstream Oxygen Sensor

Can also be sold in separate parts.

Price: 1015EUR (1197USD) including VAT, excluding shipment.
VAT invoice available
All in stock. Shipped next day.

All 100% GENUINE
Seller - company
Payment - PayPal

Got my own '15 M5 with CP with 50K on clock last February.
Got this replaced on my own car - the power increase was enormous and no drivetrain errors since then.