4 Cycling-2 Stroke
03-22-2009, 07:09 AM
#1
4 Cycling-2 Stroke
When 4 cycling occurs in a 2-stroke nitro engine, how should you systematically determine what is causing the problem?
I had this happen yesterday, and we eventually corrected the problem, but several of us had trouble determining what to adjust.
It would occur when we came off of full throttle. I thought it was the low speed needle, the others thought that it was the high speed setting.
Any help would be appreciated.
I had this happen yesterday, and we eventually corrected the problem, but several of us had trouble determining what to adjust.
It would occur when we came off of full throttle. I thought it was the low speed needle, the others thought that it was the high speed setting.
Any help would be appreciated.
03-22-2009, 07:32 AM
#2
4-stroking is caused by a too-rich setting dumping more fuel into the engine than it can burn so it sputters. Try leaning the main (high speed) needle.
03-22-2009, 03:04 PM
#3
+1, adjust the main needle first, then you may also need to make a small adjustment to the low speed needle next then the idle position last.
03-23-2009, 07:14 PM
#4
Thanks for the info.
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