Spark Plug Change @ 5k
Road Warrior
Joined: May 2008
Posts: 1,802
Likes: 2
From: Salt Lake City, UT. Dushore, Pa.
Harley fires both plugs every RPM, 2600-3200 times per min depending on how you run. A car fires 1 in 6 or 1 in 8 RPM. I think there is alot more stress on these plugs than comparing to a car or truck with the heat and no. of times fired. I'll change mine more often than 20K, usually twice a season, thank you very much.
Road Master
Joined: Nov 2007
Posts: 974
Likes: 0
From: Morrisville NC
i agree change them when recommended 1 part that goes the distance
All you guys that change your plugs at 5k or every year for that matter, when you break down somewhere or your bike doesnt run right, please be honest and man up and come back on this forum and tell us how your wires were fugged up from yanking the plugs out way more than they were designed to be yanked on, or because you are getting water up in the cap....
I will bet anything some of you are creating a scenerio like this. Sorry but plugs dont need to be changed that much and platnium plugs in cars last 100k. So theres my $.02
I will bet anything some of you are creating a scenerio like this. Sorry but plugs dont need to be changed that much and platnium plugs in cars last 100k. So theres my $.02
Tourer
Joined: Jan 2008
Posts: 496
Likes: 6
From: League City, TX
I concur every 5k is a little much though I'm running a little less than 10k a year on my bike in which I have no problem spending 15 bucks a year for a new set of plugs. Too easy and cheap not to do.
Road Warrior
Joined: Oct 2007
Posts: 1,622
Likes: 0
From: South of Raleigh, and west of the coast, NC.
UH......on the rear usually about every 10,000 miles....and the front at around 20,000miles, that was with the stock D402's'
and hoping to get more than that on the new E3's before changing the air......er, uh, oh .....tire(s)....
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Road Master
Joined: Sep 2009
Posts: 787
Likes: 6
From: Charlotte NC
How bad can a plug get in 5K that a little sand can't clean? Dealer got to love that. When was the last time anyone really had an issue and it was a bad plug? Just saying
Last edited by All Aces; Jan 4, 2011 at 09:45 PM.