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I have been reading a bunch of the different threads that discuss blue or yellow discolouration on the exhaust pipes.

Pardon my technical ignorance but my question is this; if a bike is running perfectly, am I to believe that there should not be any discolouration at all?

I ask because I see the colour blue linked to a lean running engine etc...etc.

I have run my VRod for 300km now and the small portion of the pipes that is exposed outside the heat shields where it joins the engine shows blue already. But I have had this happen on every Harley I have ever had so to me nothing is different.

What do you think?

Thanks very much all!:biker:
 

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Color me Gone
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27,333 Posts
thedragon normal seems to be a blue pipe about 6 inches out of the head. I think the concern that many express is they are seeing up to a couple of feet of blue pipe and that would be an overly lean condition. A small area of blue is normal.

Max
 
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