12 K spark plug change

[krotchrocketgrampa]

just changed plugs out for iridium plugs, used print out from FJR Tech, excellent info and easy to follow instructions and pics,thanks to this great site

thanks FJr Forum !!!!!!!!!!!!!!!!! :yahoo:

 

[CRMH Eagle]

I discovered when I changed mine at 10k miles the bike performed much better. Congrats! Be thankful you don't have a beemer so that you don't have to take it to the dealer for this. Now go spend hours reading in NEPRT when to change the iridiums.

 

[CoeShow]

I have read many posts and opinions regarding plug change interval. Personally, I have always felt that even 8000 miles is a VERY short time for a set of plugs to last in any state of the art engine design. My Ford plugs are designed to go 100k miles! I just swapped my FJR's plugs out today after 15K miles. The old plugs still looked just fine and would likely go another 15K+ miles easily with no problem. I noticed no changes or improved performance with the new plugs installed. I don't see why Yamaha would instruct to change them at such close intervals. I know the new plugs will be in there at least until 35k miles from my current experience. I find it curious also that so many owners have such different findings on this topic.

 

[RadioHowie]

I found that a slice of French Silk pie, cooled to about 40-42 degrees, is much more satisfying than the placebo effect a $25 set of spark plugs gives me.