Spark plug replacement - special tools?

[emseedee]

I've been having problems with starting on my 2013 C650GT, and I'm thinking that it might be about time to change the plugs, as they're probably the original ones. The official service manual (BMW RSD) says that I need special tools to remove the coil packs and the plugs. Is this true or is it just BMW over-egging it?

Thanks

Mike

 

[Delray]

I love the BMW variator holding tool for belt changes but I didn't buy the special spark plug tools. Photo below of three tools I used, in order, plus a torque wrench.

Below are my notes after changing the plugs on a 2013.

SPARK PLUGS

NGK LMAR8D-J due at 24,000 miles.

TORQUE spark plug: 12 Nm (9 ft. lbs.)

NOTES: Drop the radiator by removing screw clips on top sides and bottom center of radiator and two T30 bolts just under radiator cap. Loosen the overflow tank and lift up the radiator out of its holders (top sides) and rest it on something solid. For spark plugs, the long, 14mm Prius spark plug socket is a perfect fit. Apply leverage behind top of coils with 10” socket extension rod to push them gently forward and out. A lot of patient wiggling if they feel stuck. Remove coil connectors by pushing up on lip of connector with tiny (eyeglass) flat blade screwdriver and gently pulling up on the wires. It will come up and out. This is not a system like many others where you squeeze it to release it; has to be pushed and pulled out. Old spark plugs were dark at gap point but had lots of life left in them – BMW’s recommendation of new ones at 24,000 miles is solid.

 

[emseedee]

Thanks for this. I've not been able to find a prius tool with a reasonable delivery time in the UK, so I've ordered the longest 14mm thin wall one I could find, which is for the BMW mini. It was only £5, so I'll give it a try - I have a selection 3/8 inch extension rods, so hopefully it'll work. I'll report back after I've had a try.

Mike

 

[emseedee]

As promised, an update on the spark plug spanner, and also the coil removal tool.

The 14mm thin wall plug spanner that's described on eBay as suitable for a BMW mini works well when coupled with a 3 inch long 3/8 inch extension bar.

I also found a 3D printing model for a BMW coil puller on Thingiverse (search "BMW puller"). Pic below. You need to print it from something strong like PETG and beef up the layers and infill as the coil needs a good pull to remove it, but it does work. It seems that the puller (and perhaps therefore the coil) is common across many different BMW bikes.

Mike