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trevarthan · 06-14-2019, 05:43 PM

Hello,

We've got a bit of variation on our plugs after the carb rebuild.

This is plug 1: https://youtu.be/JvkZGn-QC-E

And this is plug 3: https://youtu.be/gQVyJhMcA1c

Plug 1 looks pretty lean to me.

We bent the rochester monojet metering rod arm a bit to make it richer a couple of weeks ago, but I'm not seeing a difference in plug color.

Will a lean plug start showing as less lean if the mixture has been corrected? Or does it get burnt permanently and should we install new plugs and run it for a while?

Thanks!

06-14-2019, 05:43 PM	#1
trevarthan Registered User Join Date: Mar 2014 Location: Chattanooga TN Posts: 121	Spark Plug reading Hello, We've got a bit of variation on our plugs after the carb rebuild. This is plug 1: https://youtu.be/JvkZGn-QC-E And this is plug 3: https://youtu.be/gQVyJhMcA1c Plug 1 looks pretty lean to me. We bent the rochester monojet metering rod arm a bit to make it richer a couple of weeks ago, but I'm not seeing a difference in plug color. Will a lean plug start showing as less lean if the mixture has been corrected? Or does it get burnt permanently and should we install new plugs and run it for a while? Thanks!