How often should I be changing spark plugs?


21 replies to this topic
  • mikeythefokker

Posted June 27, 2008 - 11:42 PM

#1

I have an 07 wr450. It runs great, always starts easily and is still on the original spark plug. How often should it be changed? Thanks.

  • SRT426

Posted June 28, 2008 - 02:33 AM

#2

I change mine once a year on my 2001 YZ426 that I use to trail ride. I probably run it 50hrs a year and it always looks good when I pull it.

  • ajetmech

Posted June 30, 2008 - 10:13 AM

#3

I change mine every 3 months when I check valves and stuff. I ride and race in the Desert.

  • SJMC_DON

Posted June 30, 2008 - 10:23 AM

#4

Every other year when I buy a new WR:busted:

  • brad the best

Posted June 30, 2008 - 12:38 PM

#5

when it shows wear . usually once a year or two .

  • MountainMax

Posted June 30, 2008 - 05:55 PM

#6

I wondered the same thing, mine is on it's 3rd summer now and over 5000km and the plug still looks good. and runs even better :thumbsup:

  • byggd

Posted July 01, 2008 - 04:06 AM

#7

I wondered the same thing, mine is on it's 3rd summer now and over 5000km and the plug still looks good. and runs even better :thumbsup:

Iridium?

  • MountainMax

Posted July 01, 2008 - 05:45 AM

#8

yeah, I put one in as soon as i bought the bike.

  • redswr

Posted July 01, 2008 - 12:54 PM

#9

Every other year when I buy a new WR:busted:


me too... i think my 99 still has the stock one actually :thumbsup:

  • Dube2

Posted July 02, 2008 - 06:29 AM

#10

Man, I still have the stock plug in my 05 WR. Not bragging, just realized that I should have at least pulled it to see if it's still in tact?:thumbsup: It fires right up every time, so never had a reason to check it out.

So how do you guys like the NGK Iridium Plug?. I needs to try one. What is the difference? Does it really get you better MPG, throttle responce and easier starting like they say it does?.

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  • C-P

Posted July 05, 2008 - 10:57 AM

#11

I just change mine every Spring, after leaving it in with storage oil and whatnot over the winter.

  • swede426

Posted July 05, 2008 - 12:45 PM

#12

Man, I still have the stock plug in my 05 WR. Not bragging, just realized that I should have at least pulled it to see if it's still in tact?:thumbsup: It fires right up every time, so never had a reason to check it out.

So how do you guys like the NGK Iridium Plug?. I needs to try one. What is the difference? Does it really get you better MPG, throttle responce and easier starting like they say it does?.


I noticed 2 things when changing to Iridium, easier start and runs much smoother, especially on low rpm:s.

  • driftevo361

Posted July 05, 2008 - 07:43 PM

#13

Every other year when I buy a new WR:busted:


someone is makin bank and plays their cards right

  • byggd

Posted July 06, 2008 - 04:50 AM

#14

I noticed 2 things when changing to Iridium, easier start and runs much smoother, especially on low rpm:s.

+1 :thumbsup: plus it starts easier after a low speed tip over and I need all the help I can get in that area :p

  • SJMC_DON

Posted July 06, 2008 - 07:33 PM

#15

someone is makin bank and plays their cards right


I wish... years ago I bought a new bike - paid cash, now every other year I sell a two year old bike and buy a new one with some money saved over the past two years... works out great. And I save money on sparkplugs:lol:

  • Bamster

Posted July 06, 2008 - 08:40 PM

#16

I used to put an iridium in once a year, if it needed it or not.

If your jetting is right your plug will last forever.

  • Pooley

Posted July 10, 2008 - 11:46 AM

#17

Honestly, I think my plug is 3+ years old. 01 WR426 that starts first or second kick, and runs perfectly.

  • jetfuel

Posted July 10, 2008 - 12:10 PM

#18

My riding bud just dropped off his bike yesterday saying it was running a little rough ( 98' WR400 ).

Today I asked him when did you change the plug last, He said I don't think I ever have..

You be the judge.. :thumbsup:



Posted Image

  • MountainMax

Posted July 10, 2008 - 12:22 PM

#19

oh, that looks bad and rusty, but don't look so bad at the electrode, you have a close up of that part?

  • SJMC_DON

Posted July 10, 2008 - 12:30 PM

#20

That plug looks OK from what I can see.... the rust is just an indication that he washed the bike often :thumbsup:




 
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