Idle pinch test?

[Renegade88]

Correct me here: Do I let my engine warm up then do a pinch test and if it takes 3-5 sec to stall it is set right on the LSN? or can I just do a pinch test as soon as it reaches stable rpm when still cold?

 

[Çh®i§tiªñ]

I would wait til it is warm. Then, pinch test, it should stall within 3-5 seconds. If it take forever, too rich. If it INSTANTLY shuts off its too lean.

 

[robriguez]

All you do is to pinch the fuel tube right? How far away from the nipple on the carb should you pinch.

 

[Renegade88]

very good q?

 

[Çh®i§tiªñ]

Good Q - I always pinch it in the middle of the carb and the tank.

 

[SilentHunterKellen]

I dont think it matters MUCH but if you pinch it next to the tank, you should expect a longer wait than pinching it right next to the carb. You should actually do a high speed run before you test it. That should clean out the carb from any excess fuel from last run or anything like that.