Spark Plug analysis help
Spark Plug analysis help
Thread Starter
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6th Gear
Joined: Jun 2020
Posts: 12
Likes: 4
From: Colorado
Thanks! Doesn't burn any oil. I do notice a stronger fuel smell when riding, but not sure if that is because of new-ish taller windscreen.
I appreciate you chiming in!
They are NGK Iridium DCPR7EIX plugs. Gap seems to be about .041
I appreciate you chiming in!
They are NGK Iridium DCPR7EIX plugs. Gap seems to be about .041
Last edited by boldham; Jun 16, 2020 at 01:27 PM.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,071
Likes: 1,006
with today's fuels, it is harder to determine afr. trust me, you are burning oil, just not to the point you readily notice, nature of the beast. also of note, alcohol blends do give off a smell. stock jetting???
Tourer
Joined: Feb 2016
Posts: 486
Likes: 155
From: British Columbia
Looks to me like you're running too rich. The porcelin should have a gray to honey brown hue to them if running the right air/fuel ratio. By the way, keeps those threads in your heads long lasting. Use a little never seize on those plug threads each time you thread them back in. Standard practice for aluminum heads.
Road Warrior
Joined: Dec 2012
Posts: 1,686
Likes: 242
From: Glen Mills, PA
Remember your breather set up may intake some oil vapor or dribbles here or there.
I would go back to stock plugs and then compare them again. Better rich than lean.
Any tuner will likely solve this issue with the correct fuel ratio.
Stock breather and pipes?
I would go back to stock plugs and then compare them again. Better rich than lean.
Any tuner will likely solve this issue with the correct fuel ratio.
Stock breather and pipes?
Thread Starter
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6th Gear
Joined: Jun 2020
Posts: 12
Likes: 4
From: Colorado
bustert - Thanks. I should have said not burning excessive oil! It has fuel injection and a ThunderMax tuner. I made some minor adjustments to the tuner to lean it just a touch. Seemed like it ran better after that adjustment. I'll check the plugs after a few rides again.
Last edited by boldham; Jun 18, 2020 at 12:32 PM.
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Thread Starter
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6th Gear
Joined: Jun 2020
Posts: 12
Likes: 4
From: Colorado
Looks to me like you're running too rich. The porcelin should have a gray to honey brown hue to them if running the right air/fuel ratio. By the way, keeps those threads in your heads long lasting. Use a little never seize on those plug threads each time you thread them back in. Standard practice for aluminum heads.
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Thread Starter
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6th Gear
Joined: Jun 2020
Posts: 12
Likes: 4
From: Colorado
I do have a tuner (ThunderMax) and I leaned it just a smidge. I'll check the plugs after a few rides.
hanks for the help!
