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Hi all,
I need a concept explainer. 2hy would you use the idle screw to control the idle? Instead wouldn't you just use the LSN?
When is it right to control RPM with idle screw?
@cbaker65 thanks for that explanation. That makes sense. What about the gap though? When should I adjust the gap? Instead of the LSN to increase idle?
Currently, engine idles fine, I have to open the trim a little bit to get the engine warmed up. This is the idle after warmed up, before runnning a WOT:
Throttle response is great, and WOT is fine as well. But sometimes dies when breaks applied after WOT when I stop to idle. My dile carb gap is set to 0.5mm should I increase this @cbaker65?
Thanks for the help!
Okay, I'll set the screw to have a 1.0m gap. If this rises the idle RPM should I richen the LSN a tad? Or leave it (if you think my current idle is too slow)
Thanks @cbaker65. I'm honestly happy with the tune, I just need to adjust it slightly so that it wot shut off after WOT run. It seems like a ile set crew adjustment is needed. I have a temp gun and a thermocouple I am using!
In my opinion ,if your engine idles & runs good at full WOT with out getting too hot ,then your good!
As long as the engine runs consistant temps with some trail of smoke from the pipe ,then you dont have nothing
to worry about!
My engines still run good after 10 years with out having a perfect tune ,my glo-plugs are even old!....
@Cbaxter26 : Understood. I do like the tune I have right now. It just dies after WOT, not necessarily with breaks, just when idle drops due to idle. I'll increase the idle set screw.
If I open the carb gap, this will increase RPM. Can I check the LSN with the pinch test after this? If anything, opening the gap will allow me to run richer at bottom end correct?
I have to wait a few more hours for the loctite to fully cure and then I will go out again and answer your questions. I did notice yesterday though that the the engine was turning on fine until I flipped it and it turned off immediately. Maybe my high end is rich. I opened up the carb using trim to get it started again.
I believe I did not have trim at that time. I was only using trim to start it/warm it up.