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K1600 Cylinder firing Order

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e7navy1999:
Thanks for the suggestion.  I am not sure if the GS 911 will pick up the fault if the bike is not physically running?  worth a try.  I just dread draining the radiator again...such a freaking mess even with plastic and cardboard laid out.  The rest of the disassembly is enjoyable to me. 

e7navy1999:
ok, I have the radiator out, ready to change out coil.  Now My gs911 says coil #2 and coil#4 are bad.  My issue is: the GS911 say coil #4 s the 6th in firing order?  It is obviously NOt the 6th i firing order...The german's must mean Cylinder #6?????  any input would be amazing PLEASE.  Coil #2 the GS =9aa says it is Cylinder #5 so that is easy

e7navy1999:
2012 k1600 with 100,000 US Miles: What a long freaking day.  Here is what i learned from coil troubleshooting:   noticed there is some potential misinformation regarding the K1600 firing order on the GS911 readout. The k1600 cylinders are (from left to right sitting on the bike facing forward) 1, 2, 3, 4, 5, 6.   The coil firing order is 1, 5, 3, 6, 2, 4 .  here is the issue.  The GS911 Coil to Cylinder translation is not so clear.  I am not sure if this firing order is the same for all k1600 but mine goes as follows:

Cylinder #1 coil fires 1
Cylinder #2 coil fires 5
Cylinder #3 coil fires 3
Cylinder #4 coil fires 6  GS911 reads "coil #4 is the 6th in firing order" 
Cylinder #5 coil fires 2
Cylinder #6 coil fires 4  GS911 reads "coil #6 is the 4th in firing order" 

Sooooo dozens of hours later my misfire was a combination of a bad Lamda #1 sensor that would not heat up and a bad cylinder #4 coil and Bad Cylinder #5 Coil.  (Keep in mind I replaced all the coils and plugs Jan 2022 so go a bad batch) I did figure out how to replace coils without completely removing the radiator and only doing a partial drain.  I removed the radiator hose located on the drivers left side and drained the hose into a bucket followed by removing the two clips on the top radiator support bracket.  About 3 cups coolant came out.  keep in mind if you have not replaced plugs or coils in 40-50,000 miles you would need to completely drain the radiator and pressure wash the dirt and rocks from the bottom fins.  They get packed in the radiator fins

Testing before full assembly:  I was able to run the K1600 without the radiator attached for 5-7 minutes.  (Thank GS Jim for the tip) Just keep an eye on your temps!  One has to put a latex glove over the hoses so the water pump will not blast coolant everywhere.  So, with the radiator off, coolant hoses covered and taped up, GS911 attached I would run the bike with the coils disconnected just to verify the coil at fault.  Pretty slick.  Keep in mind, if one coil goes bad it can send erroneous faults to the other coils.  Must throw off the timing a bit to come in as a coil.
 fault.   I first replaced the #5 cylinder coil and ran it and found the # 4 cylinder coil.  Turned out the one I thought was bad..The # 6 cylinder was ok. 

word of advice: Dont trust the GS911 read out 100% when troubleshooting coils.  Run some tests.  The GS911 will absolutely inform an owner there is a coil issue but you will need to do what I did and dig a bit deeper while things are torn apart.  I recommend pulling the coil wire in question and run the bike.  Make sure it is the coil that is bad per the GS911.  Then run the bike again and check for more coil issues. 

e7navy1999:
Question: Anyone ever try these Chinese BMW coils for the K1600?  They say OEM BMW and are the correct part number.  They also have the -04 upgrade coil but I could not find where BMW upgraded the -03 coil to -04  https://www.ebay.com/itm/165562037421?hash=item268c4434ad:g:iYIAAOSwZHRiw2Ee&amdata=enc%3AAQAHAAAAoLmJ2TyzljLO5O9f6Wv8prARoWE4Ta8tA9ylr%2BfsgfcBS49gMMKeg0RfFpYHPwx63DI9sb0hurGfC0oVS3lf%2BkgmtQuO2gabqeX3KWjOKWoWsvGwEGfvWqsWTJOkzRzR83%2B3pA2dxD5LCNLTUAAnvHkIIlWB%2BNisC6O2lhnyFyJUktny880pRea8y8ECE3B1FC8icuglieGTpRyXb1dwAq0%3D%7Ctkp%3ABk9SR4Lwo5GBYQ

e7navy1999:
Yeppers another update:  If you remember I replaced all six park coils and spark plus at the beginning of 2022.  Had two coils fail almost immediately.  Not a complete failure but would begin missing sparks randomly.  I since replaced the coils.  last week Coil #3 Cylinder #3 began to fail.  I replaced the coil last night and when i tested it the gs911 showed it was still generating a fault.  So long story short: I seriously doubted that I could have another bad coil so determined it must be a bad spark plug.  I swapped sparkplug #3 with spark plug #1.  The fault moved to cylinder #1.  Walaa!  Found a bad spark plug.  his plug only failed after it heated up to operating temps.  I have a new plug on order and should arrive today.  The GS911 ha way more paid for itself many times over.  Thank you hexcode.  I ironed out replacing coils and plugs without draining down the radiator.  For the #3 cylinder I had to drain just the driver left side upper hose.  After removing the tupperware, Remove the two retainer clips that hold the top of the radiator support brackets.  Pull the radiator towards the front wheel and put in a block of wood.  That gave me room to pull the #3 and #1 coil and plugs.  I did not even need to remove front wheel. 

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