What does this plug tell about the inside operation of the engine? I can't find any plug that looks like this in any online charts.
-
Possible duplicate of What Color Should the Spark Be When Using a Spark Tester?– Solar MikeCommented Feb 9, 2018 at 9:55
-
You may also find this interesting : mechanics.stackexchange.com/questions/25763/…– Solar MikeCommented Feb 9, 2018 at 9:57
-
Welcome to Motor Vehicle Maintenance & Repair!– Pᴀᴜʟsᴛᴇʀ2 ♦Commented Feb 9, 2018 at 12:11
-
It would be very helpful to know more about the engine and the application it is being used in. With that information, we stand a better chance of actually answering your question.– CharlieRBCommented Feb 9, 2018 at 14:32
-
It is 102 cc commuter motorcycle made by Bajaj auto . it uses Dtsi twin spark technology.– KamalCommented Feb 9, 2018 at 15:00
|
Show 2 more comments
2 Answers
Next time make a picture before you cleaned and sanded the plug, the color of the electrode can tell a lot about operating conditions.
To answer your question: it looks a bit fouled with oily deposits, so its possible the engine is running too rich.
What kind of bike is this plug out of? Is it carbureted or fuel injected? As far as your fuel to air ratio, you can install new plugs and do a plug chop
