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12k service replace spark plugs or not?
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#16 | RE: 12k service replace spark plugs or not?
Sat Sep 29, 2018 5:01 pm (Last edited: Sat Sep 29, 2018 5:04 pm)
Sat Sep 29, 2018 5:01 pm (Last edited: Sat Sep 29, 2018 5:04 pm)
Zitat von Lee im Beitrag #15 The only problem I see is that the gap has opened up probably double the recommended size. That causes the coil to have to work harder to supply enough juice to jump the gap. I tried to come up with a way to re-gap them consistently but the design doesn't lend itself to that. A friend of mine has run his plugs over 25,000 miles without problems (as far as I know). At 15,000 on my original plugs I am having no problems- I suspect it will show up first when cold starting. At this point I am anticipating a change at 20,000. The debate continues. The design is the same as aircraft spark plugs I am familiar with. We had dedicated, specialized tools to re-gap them. My criteria for replacement was when the center electrode looked like a "football" shape when viewed end on. Frank 2017 R1200RS- 15,000 mi. 1 yr. |
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Zitat von Lee im Beitrag #13Zitat von MrVvrroomm im Beitrag #11 https://www.summitracing.com/parts/ngk-93444 I got mine through Amazon, they are more expensive now. Just put them in your "wish list" on Amazon, wait for the price to drop.
I ride 2016 R1200RS, 2018 R1200GSA, 2016 Honda PCX150
my wife rides 2016 R1200RS, 2015 Honda PCX150 |
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#20 | RE: 12k service replace spark plugs or not?
Sun Sep 30, 2018 7:56 pm (Last edited: Sun Sep 30, 2018 7:59 pm)
Sun Sep 30, 2018 7:56 pm (Last edited: Sun Sep 30, 2018 7:59 pm)
Zitat von MrVvrroomm im Beitrag #18  I'm guessing the picture is not accurate as the threaded part of the plug looks much shorter than the OEM plug. The OEM plug has two electrodes, is there an advantage or disadvantage to this? I have enough spark plugs to last two more years, but thought others may be interested in the info. Lee |
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Zitat von Lee im Beitrag #20 You guessed right. This is the correct plug. Two electrodes and two sparks would probably lead to more complete combustion depending on how and how much atomized fuel were introduced into the chamber. I have no scientific knowledge of this at the moment. 20180930_171313.jpg - Bild entfernt (keine Rechte)20180930_171340.jpg - Bild entfernt (keine Rechte)
Regards,
Grumpy Goat RSWasserboxer.com |
#22 | RE: 12k service replace spark plugs or not?
Mon Oct 01, 2018 1:12 am (Last edited: Mon Oct 01, 2018 1:17 am)
Mon Oct 01, 2018 1:12 am (Last edited: Mon Oct 01, 2018 1:17 am)
Zitat von Grumpy Goat im Beitrag #21 Your picture shows the same numbers as the plug sold by BMW dealers. Spark Plug.JPG - Bild entfernt (keine Rechte) If it warms up in a couple days I'll check the valves and change the plugs. I'll see if the old plugs look similar to my previous picture in post #15. BTW, when I clicked on your thumbnail picture I got the same German error message that's been popping up lately. Lee |
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Zitat von Lee im Beitrag #20Zitat von MrVvrroomm im Beitrag #18 The pictured plug is not the right one for the RS. First off, I doubt it would fit down the tube. Second, I don't think the thread would fit. Finally, it is too short!! For what it is worth, the most important picture of the plug is "straight down" at the centre electrode and looking at the colour of the porcelain (if any).
I would like to apologize to anyone I have NOT offended. Please be patient. I will get to you shortly.
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Zitat von Lee im Beitrag #22 And when I clicked just now, both came up correctly. Looks like the server that stores the photos could be having bandwidth problems.
Regards,
Grumpy Goat RSWasserboxer.com |
#27 | RE: 12k service replace spark plugs or not?
Mon Oct 01, 2018 4:41 pm (Last edited: Mon Oct 01, 2018 4:47 pm)
Mon Oct 01, 2018 4:41 pm (Last edited: Mon Oct 01, 2018 4:47 pm)
Zitat von saizou im Beitrag #26 Iridum plugs have a tiny tip.  Post #15 and 21 shows the larger tip of a stock plug. The K1300S uses Iridium and BMW really charges for those. $26.82 per plug Lee |
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