2020 1250RT spark plug renewal

[ramble]

I understand that I need a coil puller tool before I put a socket on the plug. When it's inserted, how do I know it is seated onto the coil before pulling? Is it just a simple rotation until it seats?

 

[60aviator]

Have you heard of YouTube?

 

[toter]

I understand that I need a coil puller tool before I put a socket on the plug. When it's inserted, how do I know it is seated onto the coil before pulling? Is it just a simple rotation until it seats?

The tool is shaped like a C? You insert the open end of the C onto the coil from the opposite side from the electrical connectore. It will lock on and be centered over coil when fully inserted. Then pull and wiggle coil off. Be sure to remove electrical connector first.

 

[boxflyer]

The wire lead is disconnected differently than on a WetHead 1200, but the stick coil puller is the same.
It slides laterally into the slots at the end of the stick coil to allow pulling the stick coil straight out of the tunnel in the cylinder head.

You need a thin wall 14mm spark plug socket to remove the spark plugs.
https://www.amazon.com/IDS-Thin-Spark-Socket-12-point/dp/B074G24DQR/ref=sr_1_3?s=automotive&rps=1&ie=UTF8&qid=1543635091&sr=1-3&keywords=14mm+spark+plug+socket+6+point&refinements=p_85:2470955011

Here's a video of me pulling the stick coil out of a 1200 WetHead, but it's the same procedure on the 1250 ShiftHead.
https://youtu.be/sVYpMKdrido?t=104

Pick any one of these that are pretty much the same thing on Amazon...choose your color.
https://www.amazon.com/Kauplus-Coil-Removal-R-F-K-K1200/dp/B09KH3P59N/ref=sr_1_15?keywords=bmw+stick+coil+puller&qid=1670208570&sr=8-15

 

[ramble]

Thank You Boxflyer, a helpful gentleman, working on it now and finding no need to disconnect, plenty of slack on the wire/coil 2020RT.

 

[himself62]

It’s a 3/4 colar that you slide on and pull. The coil has a lowe profile lip


Sent from my iPhone using Tapatalk

 

[classicvw]

Seems like a good spot to ask a question that's always bothered me.
Why do we need to change our spark plugs at 12K miles when cars, not even premium branded ones, have intervals of 30K, 60K, or even 100K?

 

[lkraus]

Motorcycle engines typically fire the plugs many more times per mile than car engines, and I think the usually higher compression ratio increases electrode erosion. Those differences may not be linear - doubling the firing rate might cause more than double the wear.

You can probably squeeze more than 12K out of a plug, but unless you check them very frequently, you will probably be down on power and fuel mileage, and increase emissions. Running with worn plugs increases coil temperatures and can cause them to fail early.

 

[classicvw]

Motorcycle engines typically fire the plugs many more times per mile than car engines, and I think the usually higher compression ratio increases electrode erosion. Those differences may not be linear - doubling the firing rate might cause more than double the wear.

You can probably squeeze more than 12K out of a plug, but unless you check them very frequently, you will probably be down on power and fuel mileage, and increase emissions. Running with worn plugs increases coil temperatures and can cause them to fail early.

That makes sense. Thank you.

 

[jono]

Seems like a good spot to ask a question that's always bothered me.
Why do we need to change our spark plugs at 12K miles when cars, not even premium branded ones, have intervals of 30K, 60K, or even 100K?

In addition - the cars that spec changes at 60 or 100K are often too far out. The claim of long plug life can be a marketing gimmick. Plugs often show diminished performance ahead of those recommended intervals. I changed my 535i plugs "early" and got a performance boost whenever I did.

 

[ramble]

Ikraus has it right. I've inadvertently put +- 15k on my 1250 plugs and the fine wire center electrode's were slotted and quite worn. 12k seems like a reasonable limit. The new plugs gave marked power improvement on throttle-up's.

 

[wemi]

I understand that I need a coil puller tool before I put a socket on the plug. When it's inserted, how do I know it is seated onto the coil before pulling? Is it just a simple rotation until it seats?

When I have the valves adjusted/checked every 12K or so miles, all the plugs and gaskets have to come out anyway. At that time I just have them all replaced. Never would I replace the plugs outside of that. Most likely they last MUCH longer than that, but I would never install used plugs again, since the compression ring has been previously compressed and may give false torque readings.
Maintenance on our 1250s is quite inexpensive compared to the K's or Wings, etc. , so why fiddle around with this stuff?

 

[nc5p]

Make sure to use a spark plug socket and not any deep socket. I misplaced my spark plug socket and tried using a general purpose deep socket. It got the old plugs out but when torquing the new ones it the socket froze itself to the plug. A quick trip to Oreilly's for a "spark plug socket" solved that. All that after completing the valve clearance and adjusting cam timing which all went smoothly.

 

[rangerreece]

Make sure to use a spark plug socket and not any deep socket. I misplaced my spark plug socket and tried using a general purpose deep socket. It got the old plugs out but when torquing the new ones it the socket froze itself to the plug. A quick trip to Oreilly's for a "spark plug socket" solved that. All that after completing the valve clearance and adjusting cam timing which all went smoothly.

I put a pair of medical needle nose clamps in my motohansa tool roll to reach in and pull that socket out when it gets stuck. Works like magic.

 

[60aviator]

Or get one of these
https://www.wunderlichamerica.com/Motorcycle_Magnetic_Sparck_Plug_Socket_14mm

Works great!

 

[rangerreece]

Or get one of these
https://www.wunderlichamerica.com/Motorcycle_Magnetic_Sparck_Plug_Socket_14mm

Works great!

 

[gregu]

I have a coil removal tool for my 2007 R1200RT. Can this same tool be used for the 2020 R1250RT coil removal?

 

[bc1100s]

I have a coil removal tool for my 2007 R1200RT. Can this same tool be used for the 2020 R1250RT coil removal?

Short answer - Yup.