Alky Plugs

[101Diesel]

I know I'm running rich but want to. My question is are the lines on the straps my timing marks? I can't tell from looking at the side of the plug and my new plugs don't have those marks.

[Colby]

the timing marks is where the color change occurs on the strap ...  timing looks good...

[101Diesel]

Here's a better view after some more cleaning

 

 

[101Diesel]

and the other 

[Phelps]

way too rich

[101Diesel]

Traditionally, does the left side cylinder need a leaner mixture than the right?

[Phelps]

left side is normally leaner due to extra heat for some reason or another. head design i suppose.

[101Diesel]

Alright

[RadarRacing]

Usually you wanna be real close on jetting before looking for the timing mark. Yours looks like it could add maybe 2 degrees but I wouldnt till you get it tuned closer. Also add fuel and kinda start over if you add timing to any motor. At least from the picks the color change is still not to the bend.