Reading spark plugs, looking for feedback.
- Thread starter R68DartGT
- Start date
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Newbomb Turk
Well-Known Member
What fuel and are you adding something to it?
Newbomb Turk
Well-Known Member
That’s the red you are seeing on the plugs.
What’s your compression ratio and what spark plugs?
Looks like timing burn line is right. 3rd pic cylinder not running as well as the rest. Caramel color isn't bad but darker than typical. How was the engine run just before shutdown? Tyoically run hard, like drag race pass and shut off. The slow down and idle will change the coloring
Inertia
Well-Known Member
Any other plugs look like the 3rd pic ?
Bkre611 ngk plugs. 10:1 compression. It's a 415 dual quad indy cylinder head engine.
Only took out 2,4,6,8 plugs.
Newbomb Turk
Well-Known Member
It’s hard to tell with MMT on the plugs. One plug is getting oil. I’m going to assume it’s fat at idle with all the MMT on there.
What does the plug look like where the porcelain meets the shell?
Also you can skip the additives. At your compression ratio you just don’t need them. If the engine acts like it wants an octane booster there are better remedies than that.
What does the plug look like where the porcelain meets the shell?
Also you can skip the additives. At your compression ratio you just don’t need them. If the engine acts like it wants an octane booster there are better remedies than that.
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