Oily plug

[Brian Brower]

My plug is oily black with little chunks of something. So what does that tell me. I'm a newbe and I'm not sure.

 

[crassius]

maybe too much oil in fuel or maybe too rich at carb or maybe just hasn't run in enough to seat the rings

 

[Murkle]

This might help everyone.
If it's correct that is, it seems pretty close for the right one.

From: https://www.tuningmatters.com/how-tos/beginners-guides/check-spark-plug-correct-carburetor-setting/

 

[Brian Brower]

This might help everyone.
If it's correct that is, it seems pretty close for the right one.

From: https://www.tuningmatters.com/how-tos/beginners-guides/check-spark-plug-correct-carburetor-setting/

Running 25 to 1 and 470 miles

 

[Murkle]

Is that ratio your fuel to oil? Or air to fuel? Also, which plug here looks most like yours?

 

[Frankenstein]

Running 25 to 1 and 470 miles

You may be a tiny bit rich then, which is good until you've finished break in (470mi is definitely past that) so I would drop to 32:1 and try leaning it out a bit, maybe even raise the clip on the needle to bring your midrange in a bit while leaving wot safe and cool with a slightly rich jet.

 

[Brian Brower]

You may be a tiny bit rich then, which is good until you've finished break in (470mi is definitely past that) so I would drop to 32:1 and try leaning it out a bit, maybe even raise the clip on the needle to bring your midrange in a bit while leaving wot safe and cool with a slightly rich jet.

Oil to fuel

 

[Brian Brower]

Oil to fuel

okay thanks I'll try that

 

[Murkle]

Hehe looks like some quotes are reversed, but yeah, dropping the fuel oil ratio to 30~32 would probably help.

 

[Frankenstein]

Hehe looks like some quotes are reversed, but yeah, dropping the fuel oil ratio to 30~32 would probably help.

Nobody uses air/fuel ratios here really since we work with jets and not injection systems.