mzanzirc
RCTalk Champion
I know I know, not ANOTHER tuning thread. But I've come to the conclusion that any tuning guide is merely a very rough guide. Very rough.
After breaking in my engine and with it running pretty sweet, I decided to change all my needles back to "stock", flush, whatever you can call it, to try and tune from scratch. I want to learn this dark art.
Reading and watching some videos, most of it looked and sounded very simple. Can't be THAT hard now can it? On paper it looks easy enough....
What a ballsup!
I first eyeballed my idle gap where it was. Didn't measure it, but it looked pretty much more than 0.5-1mm. More like 1.5mm? Can't say.
So I set it to just over 1mm. Say around 1.5mm. Which it looked like where it was.
Started the car up and the idle was very high. The clutch would engage and it was smoking like a chimney. Leaning out the LSN made it worse.
My idle gap was probably too high, fuel was too much and that made the car wanna go. Like I'm on the throttle a bit.
I reduced the idle gap down to 1mm. Maybe a pinch below 1mm.
Set both LSN and HSN needle flush with the "housings" again.
Fired it up and now the idle is too low, and the engine dies after a couple of seconds. Basically it won't idle for long, unless I'm giving it a bit of throttle. It goes, but take off is groggy and would die if I give the throttle a little stab. Gently on the throttle and it will pull away and run. This sounds like it's running too rich on the bottom end?
It was late at night, SWAMBO was getting agitated and I left the car.
So, first thought was that I need to lean out the LSN to get the idle a bit higher so that it at least idles good before I go onto the HSN tuning?
The car was running great, so I know it's LSN and HSN needle issue.
Any thoughts on the way forward? At least the car doesn't sound like a banshee trying to kill me. I can work from a low idle.
Edit: So what I will be doing going forward is to record each change, the result of the change and any correction I made and then the result again.
Just so that I can backtrack if I need to.
After breaking in my engine and with it running pretty sweet, I decided to change all my needles back to "stock", flush, whatever you can call it, to try and tune from scratch. I want to learn this dark art.
Reading and watching some videos, most of it looked and sounded very simple. Can't be THAT hard now can it? On paper it looks easy enough....
What a ballsup!
I first eyeballed my idle gap where it was. Didn't measure it, but it looked pretty much more than 0.5-1mm. More like 1.5mm? Can't say.
So I set it to just over 1mm. Say around 1.5mm. Which it looked like where it was.
Started the car up and the idle was very high. The clutch would engage and it was smoking like a chimney. Leaning out the LSN made it worse.
My idle gap was probably too high, fuel was too much and that made the car wanna go. Like I'm on the throttle a bit.
I reduced the idle gap down to 1mm. Maybe a pinch below 1mm.
Set both LSN and HSN needle flush with the "housings" again.
Fired it up and now the idle is too low, and the engine dies after a couple of seconds. Basically it won't idle for long, unless I'm giving it a bit of throttle. It goes, but take off is groggy and would die if I give the throttle a little stab. Gently on the throttle and it will pull away and run. This sounds like it's running too rich on the bottom end?
It was late at night, SWAMBO was getting agitated and I left the car.
So, first thought was that I need to lean out the LSN to get the idle a bit higher so that it at least idles good before I go onto the HSN tuning?
The car was running great, so I know it's LSN and HSN needle issue.
Any thoughts on the way forward? At least the car doesn't sound like a banshee trying to kill me. I can work from a low idle.
Edit: So what I will be doing going forward is to record each change, the result of the change and any correction I made and then the result again.
Just so that I can backtrack if I need to.
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