Carb or ignition ?

mbaird said

I have been chasing a persistant rich condition and eratic afr reading .

Its eating fuel and hurting my eyes .

Could this be a weak ignition spark ?

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Yes. When the ignition doesn't have enough power it can look like its running rich when in reality its not. I have seen my engine go from running really good with clean plugs with 14+ volts at idle yet drop the voltage to the 13.5 and it fouled plugs and ran like it was rich.

I know others that have seen the same. Ignition can have a huge effect on combustion quality

This is what I use: https://obd2australia.com.au/produc...MIobfFxdHI8AIVf4NLBR1Z_QGIEAQYAyABEgJQefD_BwE