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Author Topic: How to do a plug chop  (Read 4810 times)

Offline MotorGeek - Jerry Hall

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Re: How to do a plug chop
« on: March 27, 2015, 03:19:35 pm »

Most successful tuners have different techniques they use and using/viewing spark plug as a major tuning tool is a stage we have all gone through.  As we gain experience we learn that reading spark plugs does not really tell us much about the air/fuel ratio.

Experienced tuners view spark plugs to select the correct heat range, the best type of plug for the application and an indicator if detonation has been occurring.

The best tuning tools use 3 of your senses and listed it the order that I feel are most important.  Hearing, what the engine sounds like. Sense of acceleration and how the engine is performing.  Sight, what the piston crown looks like, what the head looks like and lastly what the spark plug looks like.

 A spark plug cannot tell the tuner when the engine is making optimum power.  A spark plug cannot tell when the air fuel ratio is too rich or too lean.  The color of the spark plug, and the length of the soot ring are only an indication of the operating temperature of that part of the spark plug that is being studied.  That are many variables that must be considered when looking at spark plugs and trying to get an indication of what is happening inside of the engine. 

I commend the person for taking the time and expense to put the above article together but it may miss-guide the average person trying to find the optimum fuel mixture for their two stroke engine.  I do not want to offend the person that wrote the article but one of the most important parts of the spark plugs shown above have been cut off and thrown away.  No mention was made as to the type of load that was on the  engine or the amount of time the plugs were under this load.

I do not want to offend the person that put the above article together but if the majority of the viewers would like me to show the flaws in the above tuning techniques, I will try to do and put all of those sacrificed spark plugs to better use.

 
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