TTS master tune, it's a flash tuner.

http://www.mastertune.net/

 

The problem is caused by a carbon build up on the pistons.

 

If this is the case, how do we clean it?

 

This is not always the case, but more often than not it is because most air cleaners feed the hot dirty oily air from the engine back into the combustion chamber.

Not only does this compromise the performance of your bike (internal combustion engines run best with cool dry air mixed with gas and no oil), but the oil going into the combustion chamber builds up carbon deposits and effectively raise the compression ratio.

So now you have a bike that ran fine for thousands of miles, and then started pinging.

What do most people do? They treat the symptom instead of the cause. They retard the timing, thus reducing the performance of the bike even further.

What would be far better for engine longevity AND performance is to get an air cleaner, like an Outlaw 587, that does NOT feed that hot dirty oily air into the engine.

Once you do that, there are a few ways to get the carbon deposits out of your combustion chamber without pulling it apart.

 

The cause apparently is carbon buildup due to dirty air I guess but if the motor company agrees that they need to add fuel then so can you. Personally I'd bite the bullet and find a reputable tuner in the area and get it fixed with the proper tune. If your still running stock then your running pretty lean from the get go. If that's not a route your willing to take hen maybe running some seafoam through your gas tank a couple of times might help s well. 1 other thing comes to mind is going to a colder plug such as the 10R12 from HD. This may help some but not sure, I run this year round but I don't ride in extreme cold either.

 

My 96 with woods 555's pinged badly in 5th and 6th when I opened the throttle. I took 4° of timing out of my tmax from 2800 up. Pinging is gone and she runs great.

 

DT Glide is likely correct. Carbon build up on pistons or combustion chamber will raise compression and thus a ping. Retarding timing to correct this will effect mpg and performance. Routing the crankcase breathers out of the combustion chamber may help, burning quality name brand fuel to incl pure gas will help, RPM's hot will help prevent/remove carbon build up, over fueling motor with "a tuner" will cause carbon build up. To eliminate this in automobile engines, the only product I have found over the years is Chevron Techron. Install 4-5 oz's to a full tank of fuel and run the motor to operating temp and ride it hard to high rpm's multiple times. Leave set overnight and do it again. May have to treat system several times. This stuff does work, and the injector version of this product works better then the fuel system cleaner version. No, I did not advise you to use Seafoam product, there is use for Seafoam, but it does not perform even close the the Techron.

 

The topic of venting the crankcase to the atmosphere is common. I did this to mine about a year ago, and have noticed great improvements. As someone else mentioned, your engine is not fond of burning moisture (a normal byproduct of an I. C. E.) and oil either.

 

Can you explain what you did?

 

Is the 4-5 ounces to a cars or bike's tank?
Never mind......