Plug chop

**Fri Jun 14, 2024 10:29 pm » Post: #1 » Download Post**

I did a plug chop on my mc21 today.
I find the plug was a bit red in colour. I have never seen this before on any bike. Why is it red?

**Sat Jun 15, 2024 10:45 am » Post: #2 » Download Post**

Are you using an octane booster that contains MMT?

**Wed Jun 19, 2024 9:11 pm » Post: #3 » Download Post**

ericandchi wrote:Are you using an octane booster that contains MMT?

No, i run 98 octane pump gas. Premix motul oil (red). Can the oil make sparks red?

**Tue Jun 25, 2024 4:39 pm » Post: #4 » Download Post**

Ive never seen that colour on a plug. I mostly use RED 2T

**Wed Jun 26, 2024 5:33 pm » Post: #5 » Download Post**

Is this any help
https://turbododgeparts.com/content/faqs/how_to_read_a_spark_plug.html
_________________
Why do things simply when you can complicate them

**Wed Jun 26, 2024 7:11 pm » Post: #6 » Download Post**

Update.
Put in two new plugs and ride it for a couple of hours. When i came home i did a plug chop to see if the plugs are red again. And now one of them are white! Mad

I just changed from br9ecm to br8ecm. It also was a very warm evening.
Attached is the plug. The white plug is the rear cylinder.

**Wed Jun 26, 2024 7:12 pm » Post: #7 » Download Post**

Front cylinder