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#298751 Marcus (User) Senior Boarder Posts: 204 Question on spark plugs 1 Year, 10 Months ago   For those who say there are no stupid questions... Get ready! I was looking at all the routine maintenance for my 2009 Roadstar just to get an understanding of what I will need to do and when it comes to spark plugs I have some confusion. I am reading out on the interweb that we have 2 spark plugs per cylinder, is this correct? I haven't pulled them yet but it looked to me like I have only wire going to each cylinder. Also when looking in the owner's manual I see they recommend iridium for replacement spark plugs. Does this mean it came with iridium's? I am thinking that kinda sucks because if they did I will see no improvement from going to iridium. Yeah yeah, it already runs incredibly and I have NO complaints. still... Thanks, folks. -Marcus   Logged     The administrator has disabled public write access. #298752 rick8mitch (User) Expert Boarder Posts: 537 Re:Question on spark plugs 1 Year, 10 Months ago   pull the tank off ...really easy...youll see there are 4 plugs, 2 per cylnder use irridium plugs and youll be happy you did when the tank is off its a great time to clean off the dust that gets caught up there rick   Logged     The administrator has disabled public write access. #298804 Stick (User) Gold Boarder Posts: 679 Re:Question on spark plugs 1 Year, 10 Months ago   I've had two 01s an 03 and a 05 and none came with iridium plugs. The newer may but I couldn't tell you for sure. All I do know is that my 05 runs much better since the switch.   Logged       The administrator has disabled public write access. #298811 takehikes (User) Platinum Boarder Posts: 2279 Re:Question on spark plugs 1 Year, 10 Months ago   Seriously doubt it came with iridium's but they are worth it. Add Dyna coils and that thing will really light off!   Logged     http://aeechoppers.blogspot.com/   The administrator has disabled public write access. #298831 Curt (Moderator) Never to old to ride! Moderator Posts: 12511 Re:Question on spark plugs 1 Year, 10 Months ago   Pull a spark plug wire off one you can see and get the number off of it and we can tell you if it is iridium or not. If it isn't then when you change them go to iridium they are much better. Funny it too Yamaha long enought to recognize that fact after a ton of us already did it. We are on the cutting edge on here.   Logged     My Site Black Ice is Shiny, Black Ice is Deadly, Ya Wanna Ride My BlackIce?   The administrator has disabled public write access. #298834 Greysnake (User) I'm so far behind I think I'm first. Platinum Boarder Posts: 7911 Re:Question on spark plugs 1 Year, 10 Months ago   + 3 on the iridium's   Logged     06 Midnight Silverado *nothing shines like a star*   The administrator has disabled public write access. #298838 kryptoknight (User) Junior Boarder Posts: 143 Re:Question on spark plugs 1 Year, 10 Months ago   +4 on iridiums +2 on new coils and wires Dyna3000 doesnt hurt either   Logged     The administrator has disabled public write access. #298848 greenpus (User) Platinum Boarder Posts: 1674 Re:Question on spark plugs 1 Year, 10 Months ago   Autolite 4164 plugs changed yearly. Bike starts and runs great   Logged     Last Edit: 2010/07/28 16:43 By greenpus.   The administrator has disabled public write access. #298915 Marcus (User) Senior Boarder Posts: 204 Re:Question on spark plugs 1 Year, 10 Months ago   I yanked a wire and found that my 2009 Roadie came with Denso iridium plugs, part #X22EPR Another mod I can't do. BAH! Thanks folks. Oh and not that it was a surprise to y'all but yes there are two plugs per cylinder. *smacks forehead*   Logged     Last Edit: 2010/07/28 22:02 By Marcus.   The administrator has disabled public write access. #298919 Marcus (User) Senior Boarder Posts: 204 Re:Question on spark plugs 1 Year, 10 Months ago   So what's our favored brand of spark plug wires and coils?   Logged     The administrator has disabled public write access.

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