like a ROASTED MARSH-MELLOW done on a CAMPFIRE.
Spark plugs
Extreme HDF Member
Joined: Sep 2006
Posts: 10,033
Likes: 29
My bike runs great with platinums. My first set of stock plugs lasted about 6500 miles and got a miss. Replaced with same and got same results. Replaced with platinums and ran them over 30k miles before changing them and then only because I had added cams and a tuner and wanted to monitor the burn on a new set of plugs. The second set of platinums now have 22k miles on them and are doing just fine.
Cruiser
Joined: Mar 2008
Posts: 179
Likes: 1
Spark Plugs
With today's electronic ignition and fuel injection. Those plugs look good from the photos. Look in beside the ceramic and see what color or build up may be there. Every 3-5 years I change my spark plug wires. They don't cost that much and with the carbon filler it wouldn't hurt. Fossil
Advanced
Joined: Feb 2008
Posts: 56
Likes: 0
Spark Plug Color
I have an 07 FLHP. This is my first EFI bike. I changed the air cleaner, exhaust, and installed a V&H FuelPak last week. I also put a new set of plugs in so I could see if I was running too rich or too lean. The bike performs awesome. Power everywhere, smooth acceleration, no decel pop. I have put about 250 miles on it so far. I pulled the plugs to take a look this evening and they still look brand new. Not too light, not to dark....they look new. How is this possible?
Last edited by global force; Jun 1, 2009 at 09:38 PM.
Seasoned HDF Member
Joined: Apr 2006
Posts: 10,675
Likes: 95
From: Billings,Mt.
Elite HDF Member
Joined: Mar 2006
Posts: 3,673
Likes: 606
From:
i change mine if the bike has trouble starting in the spring. some plugs have lasted 5 years some have lasted 5 days. if it ain't broke don't fix it. i run the $1.29 champions.
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Tourer
Joined: Jul 2007
Posts: 395
Likes: 1
From: Cave City, Ky.
Not to hijack the thread but has anyone tried the Iridium plugs.
Two guys I ride with use them and swear they make a diffference in performance and fuel mileage.
I have not tired them as my bike only has 3,000 miles on it, but I might give them a try when they are ready to be replaced.
Two guys I ride with use them and swear they make a diffference in performance and fuel mileage.
I have not tired them as my bike only has 3,000 miles on it, but I might give them a try when they are ready to be replaced.
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