White spark plugs
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Seasoned HDF Member
Joined: Sep 2012
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From: almost there
White spark plugs
Im still tinkering with my new adj ignition and jetting.
I installed new NGK Iridium bpr5eix-11 so I could get a better look to see how lean I was running. After 50 miles they look too white. Im still running "pure gas 90 octane". The 74 main jet blacked the old plug and changed to 72 main & now their white.?
Tomorrow I will retard a 1/16 inch to see where my heat band goes on the strap.
I installed new NGK Iridium bpr5eix-11 so I could get a better look to see how lean I was running. After 50 miles they look too white. Im still running "pure gas 90 octane". The 74 main jet blacked the old plug and changed to 72 main & now their white.?
Tomorrow I will retard a 1/16 inch to see where my heat band goes on the strap.
Last edited by aces&8s; Apr 21, 2014 at 10:31 PM.
Thread Starter
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Seasoned HDF Member
Joined: Sep 2012
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From: almost there
Thanks, I have turned it out about a 1/4 turn richer now, but Ill turn it some more.
Last edited by aces&8s; Apr 21, 2014 at 10:35 PM.
Road Master
Joined: Nov 2012
Posts: 794
Likes: 1
From: Alvin TX
from the looks witch is had to do with the gas of today you do need to fatten it just a bit don't do it all at once the gas blend is about to change to summer blend & you'll be changing your tune again
Last edited by cowboy 51; Apr 21, 2014 at 10:30 PM.
Seasoned HDF Member
Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
They ain't white, they is grey...my WG ran that colour and I went a grade colder on the plug which made it greyer and it ran like a raped ape and was good on gas.
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Seasoned HDF Member
Joined: Sep 2012
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From: almost there
Thanks Spanner, I will defiantly keep that in mind. I called NGK Tech and he recommended That I do have the correct plug [ BPR5EIX-11 ] and for me to richen the carb screw for now.
If need to, I will go the next cooler plug [BPR6EIX-11 ]. Tech said IF I go cooler there would be a chance of carbon build up.
If need to, I will go the next cooler plug [BPR6EIX-11 ]. Tech said IF I go cooler there would be a chance of carbon build up.
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Road Warrior
Joined: May 2012
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From: Between Fort Worth and Wichita Falls Texas
That would depend on where you ride. If on highway I'd go cooler. If in town I'd stay where you are.
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Seasoned HDF Member
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From: Indiana
Im still tinkering with my new adj ignition and jetting.
I installed new NGK Iridium bpr5eix-11 so I could get a better look to see how lean I was running. After 50 miles they look too white. Im still running "pure gas 90 octane". The 74 main jet blacked the old plug and changed to 72 main & now their white.?
Tomorrow I will retard a 1/16 inch to see where my heat band goes on the strap.
I installed new NGK Iridium bpr5eix-11 so I could get a better look to see how lean I was running. After 50 miles they look too white. Im still running "pure gas 90 octane". The 74 main jet blacked the old plug and changed to 72 main & now their white.?
Tomorrow I will retard a 1/16 inch to see where my heat band goes on the strap.
So, what harm is it to have "white" plugs?