- May 1, 2001
- 1,452
- 0
Being the goofball bonehead that I am, I recently rejetted my KDX 200 that was pinging and knocking to 220 specs (accidentally). I jetted 148/42 instead of 155/45 on a stock 200. Bike now runs much better, almost no pinging and knocking, but is this too lean? Is there another way to determine this other than a plug chop? Any help would be appreciated :)