Ever used a 3 electrode plug? (Newbie)


10 replies to this topic
  • Africkinmoose

Posted March 15, 2008 - 10:51 PM

#1

I just got my first 650R, a 2004 with fmf2 pipe and some HRC kit. Not really sure what all the mods are.
I changed the oil and replaced the spark plug, (the old one was black) but the store I went to for the plug didn't have the recommended NGK plug. I was told the one they gave me would work, but it was a brand I've never heard of and it had 3 grounds (not electrodes lol).
Since changing the oil and plug, and messing with the idle screw, my bike does not quite run right. It idles fine, but give it too much throttle and it dies (didn't do that before I changed those things)
Is the plug the issue or could it be jetting?
Sorry, but I'm not sure how to tell what mods have been done like uncorking or air filter mod since I'm not sure what stock looks like.

Thanks so much for any help

  • Sixotoo

Posted March 15, 2008 - 10:59 PM

#2

3 electrodes? or 1 electrode and 3 grounds like an aircraft plug? Doesn't much matter, you will still only get one spark somewhere on it. Should make no difference as long as u have the correct fuel/air mixture.

  • Africkinmoose

Posted March 15, 2008 - 11:33 PM

#3

probably 3 grounds if that's what makes sense. I was looking at a plug diagram and probably confused the two components.

  • martinfan30

Posted March 16, 2008 - 08:09 AM

#4

I would NEVER run one of those in my bike. Is it a "Bosch" plug? Garbage. I have seen those ground electrodes break off and destroy many a cylinder/piston/head on the engines at work.

Take it out, throw it away, and order an NGK.

  • Africkinmoose

Posted March 16, 2008 - 09:02 AM

#5

I would NEVER run one of those in my bike. Is it a "Bosch" plug? Garbage. I have seen those ground electrodes break off and destroy many a cylinder/piston/head on the engines at work.

Take it out, throw it away, and order an NGK.


Will do. Thanks a lot. Is that likely the cause of the engine dying, or could I have screwed something else up? Thanks for any input.

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  • martinfan30

Posted March 16, 2008 - 09:56 AM

#6

Will do. Thanks a lot. Is that likely the cause of the engine dying, or could I have screwed something else up? Thanks for any input.


Ok, you should reset the fuel mixture screw. This is a great site for the R guys.

http://borynack.com/XR650R/index.htm

Rich.

  • jo-hn1777

Posted March 16, 2008 - 12:39 PM

#7

somethin like that happened to my bike once when i changed the plug ...turned out it was 1 heat range too hot...could that be ur problem?

  • Bibleman

Posted March 16, 2008 - 01:46 PM

#8

If you're worried about a piece of the plug having broken off and damaging something, I would think you could just pull the plug and see if it's all intact:excuseme:

  • Africkinmoose

Posted March 16, 2008 - 04:08 PM

#9

If you're worried about a piece of the plug having broken off and damaging something, I would think you could just pull the plug and see if it's all intact:excuseme:


I'm not worried a piece of the plug broke off, I was just wondering if using that plug would be causing my bike to run poorly. No worries though, I figured out that when I messed with the idle, I set it too low. Thanks for the advice though.
:confused:

  • martinfan30

Posted March 16, 2008 - 04:36 PM

#10

If you're worried about a piece of the plug having broken off and damaging something, I would think you could just pull the plug and see if it's all intact:excuseme:


I was only noting that I have seen these plugs come apart before. You wont be able to pull the plug and check it for a poss. break until its too late.

My advise is run NOTHING but NGK's. Splitfire's, Bosch plugs with multiple ground electrodes can cause problems.

JMO....

  • Denn10

Posted March 16, 2008 - 09:13 PM

#11

I'm not worried a piece of the plug broke off, I was just wondering if using that plug would be causing my bike to run poorly. No worries though, I figured out that when I messed with the idle, I set it too low. Thanks for the advice though.
:confused:


there more of a gimmic and rip off then anything else, stick with the plug your manual says there not that bad at all.





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