delta_kilo
Senior Member
- Messages
- 122
I just ordered a Walbro 990 carb. I figured I'd ask what the needle setting should be to start tuning from since I doubt they will be right when it arrives in the mail.
Also I have read do a high speed pass and then shut the engine off and check the plug to see if it's a brown paper bag color. I'm guessing that would be the high speed screw but what am I looking for to test the low speed side? On my T-maxx you'd cut off the fuel and try to get the engine to die within 2 or 3 seconds. I'm just guessing but I'm thinking it probably isn't that easy on this.
So need some tuning advice.
Also I have read do a high speed pass and then shut the engine off and check the plug to see if it's a brown paper bag color. I'm guessing that would be the high speed screw but what am I looking for to test the low speed side? On my T-maxx you'd cut off the fuel and try to get the engine to die within 2 or 3 seconds. I'm just guessing but I'm thinking it probably isn't that easy on this.
So need some tuning advice.