White spark plug tip.
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Road Master
Joined: Jun 2007
Posts: 958
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From: Birch Bay, WA
White spark plug tip.
I have been hearing all sorts of concern on this board about heat, so I decided to check my rear spark plug after a long ride today. The bend in the tip was white, along with a portion of the other metal park where the spark is generated (sorry, the lingo escapes me right now).
The bike had the Harley download when the air kit and the pipes were installed and is normally not uncomfortably hot unless I have been riding at speed for a while and then am just stopped in traffic.
Am I still running hot(or too lean), even after the work done in the dealer? This is an 88CI fuel injected bike with no engine work done.
Advice?
spiz
The bike had the Harley download when the air kit and the pipes were installed and is normally not uncomfortably hot unless I have been riding at speed for a while and then am just stopped in traffic.
Am I still running hot(or too lean), even after the work done in the dealer? This is an 88CI fuel injected bike with no engine work done.
Advice?
spiz
Thread Starter
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Road Master
Joined: Jun 2007
Posts: 958
Likes: 1
From: Birch Bay, WA
Then I am unqualified. I checked the maintenance manual and the overheated plug they show is white stem to stern. My plug looked nothing like that. If I am supposed to get a magnifying glass on it then I won't know what bad looks like.
What are the odds slip-ons, breather kit and download at the dealer that sold the bike would be a recipe for failure? Again, I don't know anything is "wrong", just making sure this bike lasts. It is just too damn much fun to not have available because I grenaded the engine.
spiz
What are the odds slip-ons, breather kit and download at the dealer that sold the bike would be a recipe for failure? Again, I don't know anything is "wrong", just making sure this bike lasts. It is just too damn much fun to not have available because I grenaded the engine.
spiz
Last edited by spizzyman; Sep 6, 2008 at 08:36 PM.
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Joined: Aug 2008
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You want your plugs to be light tan, sort of like coffee with too much creamer.
White means heat, which is not good.
I have never put a whole lot of faith into reading spark plugs. The color of the plug will give you a general idea of what is happening in your motor, but a real read is to look at the top of the pistons with a bore light.
You would be amazed at the amount of detail you can see thru a spark plug hole.
White means heat, which is not good.
I have never put a whole lot of faith into reading spark plugs. The color of the plug will give you a general idea of what is happening in your motor, but a real read is to look at the top of the pistons with a bore light.
You would be amazed at the amount of detail you can see thru a spark plug hole.
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Joined: Nov 2007
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You want your plugs to be light tan, sort of like coffee with too much creamer.
White means heat, which is not good.
I have never put a whole lot of faith into reading spark plugs. The color of the plug will give you a general idea of what is happening in your motor, but a real read is to look at the top of the pistons with a bore light.
You would be amazed at the amount of detail you can see thru a spark plug hole.
White means heat, which is not good.
I have never put a whole lot of faith into reading spark plugs. The color of the plug will give you a general idea of what is happening in your motor, but a real read is to look at the top of the pistons with a bore light.
You would be amazed at the amount of detail you can see thru a spark plug hole.
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Road Master
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From: so.jersey
mostly on the stock motors i've had or saw were a little on the white or light side
on my 2000 95" fatboy carbed they were like a tan color but the 05 i just traded was always white with a tune and pc-3 so i would say you are ok unless it starts to ping or run bad.gas has a lot to do with the color also. hope this helps
on my 2000 95" fatboy carbed they were like a tan color but the 05 i just traded was always white with a tune and pc-3 so i would say you are ok unless it starts to ping or run bad.gas has a lot to do with the color also. hope this helps