Spark plug read....

RustyRatRod said

IMO, if you are running pump gas with ethanol, it is all but impossible to read plugs.

Click to expand...

No it's not. I can read a plug on pump gas, race gas, E-85, methanol, blown, unblown, two stoke...what ever. It's not hard. You have to know what you are looking at.

To the OP...if it's an autolite plug I'm about 88% sure your heat range is correct.