Need help tuning my Rc10 HELP!!!!! lol

[JESSE G]

I went out tonight to run my Rc10. A couple days ago I ran it with very little problems it ran really good. Well tonight it wouldnt start unless I turned the throttle trim up, and as soon as I would lower it, it would stall. I tried adjusting the hsn both ways turning it only 1/16 of a turn at a time and going back to where I started before going the opposite way, when I did this it wouldnt start at all I actually tore skin off my fingers starting it over and over and trying to get it adjusted so it would idle. I havent messed with the lsn at all yet, it ran good when I first got it so I diddnt think I should move it. What am I doing wrong? It was sooooo nice out too I was so frustrated I just drained the tank and brought it in. Any Ideas??? :shrug:

 

[Buggyracer28]

Turn your throttle screw clockwise 1/16 at a time untill it stays at an idle. Leave your throttle trim where it was. Tune on the car first, then the radio.

 

[JESSE G]

I will do that, I just adjusted the idle by looking down the carb and setting the opening untill there was about the thickness of a credit card, with the trim turned all the way down. The problem is I can't get it to idle the way its tuned.

 

[Plaidfish]

sounds like you need to adjust your LSN dude....is it loading up before it dies or is it just stopping flat......remember LSN adj are even more drastic than HSN......make VERY SMALL turns on the screw....it takes me forever to get mine right but man when it hits you know.....

 

[JESSE G]

It dies flat just instantly, I kind of thought it was the lsn but it ran so good the other day I just thought it might be something else. I'm not sure but I think its starving for fuel, so I need to turn it out?

 

[Plaidfish]

yes out....if it's starving for fuel you want to give it more fuel...just a gnat's ass crack at a time on the LSN.....I mean like not even an hour...like 15 mins...LOL....or just do the cheater method and open your idle a hair more...but I wouldn't reccomend doing that if it was idleing good the last time you had it out.......

 

[redhatman]

It dies flat just instantly, I kind of thought it was the lsn but it ran so good the other day I just thought it might be something else. I'm not sure but I think its starving for fuel, so I need to turn it out?

JESSE G, the temp outside makes a HUGE difference in how tha engine performs. If you say the engine is starving of fuel, turn it out at about 1/8 to 1/4 turn at a time....What I have to do sometimes, is lean out the LSN a bit toget it started so there is not a flooded engine. A good place to try is making the LSN flesh with its casing.... I then fine tune from there until the exhaust and temp are about right, and then adjust the HSN accordingly. Hope that helps...
-Pat (redhatman)

 

[Plaidfish]

if I had to got through all that every time I run...I WOULD smash my buggy.....Redhat you should probably get to a point where your stuff runs well before giving advice to others in the same boat.......just an opinion not a demand or trying to start anything here.....Jesse, just richen up the LSN a crack and see what you get...and remember to make a few passes and let the carb settle in to the new adj before you turn it again....I usually wait at least 30 seconds before turning a screw again

 

[Plaidfish]

red hat just be careful leaning out the LSN too much doing that.....If you start popping glow plugs you'll know.....the LSN shouldn't need to be turned very often as long as the weather doesn't change too drastic

 

[JESSE G]

if I had to got through all that every time I run...I WOULD smash my buggy.....Redhat you should probably get to a point where your stuff runs well before giving advice to others in the same boat.......just an opinion not a demand or trying to start anything here.....Jesse, just richen up the LSN a crack and see what you get...and remember to make a few passes and let the carb settle in to the new adj before you turn it again....I usually wait at least 30 seconds before turning a screw again

Its very close, so I definetly dont want to mess with it much at all for sure, I mean I've got it where the clutch is just about to disingadge and thats when it dies! If I hit the throttle it seemed to respond fairly quickly

 

[Pinblaster]

Sounds to me like you need to adjust the LSN and maybe your idle screw a little. When you adjust the LSN you wont need to move it far. Never adjust it more than 1/8th turn total in either direction and adjustment are less than 1/16 at a time. Once you get it running, drive it around a few minutes to get it warmed up then stop and do a pinch test on the fuel line. It should run for about 3 to 5 seconds before it dies. Any longer than 5 seconds and the LSN is too rich, any less than 3 and its too lean. Want more info :read: --> http://www.rc10gthobby.com/mystracing/Nitroind.htm
http://www.rcnitro.com/rn/articles/super_tune.asp

 

[Plaidfish]

yeah that sounds like it might be a lil lean...I'd richen it up a hair....and I mean a hair at a time.....did you richen the HSN up at all?...it's always better to be more on the rich side than lean side...what temps were you getting it up to?
sometimes I find if I let mine warm up for a while I get more consistent tunes as well.....otherwise you could be chasing a tune and it didn't even need it.....saw a mill that acted the way you're describing and turned out the guy had all kinds of gunk in his mill...never used ARO and it was all gunked up...threw some ARO in it and ran the piss out of it (ran like ass for a while) but it cleared out eventually and then it was fine...of course by then we had already been back to factory settings and retuned anyway.....

 

[JESSE G]

Sounds to me like you need to adjust the LSN and maybe your idle screw a little. When you adjust the LSN you wont need to move it far. Never adjust it more than 1/8th turn total in either direction and adjustment are less than 1/16 at a time. Once you get it running, drive it around a few minutes to get it warmed up then stop and do a pinch test on the fuel line. It should run for about 3 to 5 seconds before it dies. Any longer than 5 seconds and the LSN is too rich, any less than 3 and its too lean. Want more info :read: --> http://www.rc10gthobby.com/mystracing/Nitroind.htm
http://www.rcnitro.com/rn/articles/super_tune.asp

Thanks for the links I'm :read: them right now

 

[DirtRacinFool]

Jesse, i'm gonna toss one more thing at you that could be the problem, the glow plug. I've had glow plugs go bad on me and cause the same problem your talking about. Try a fresh plug before you go nuts doing adjustments.

 

[JESSE G]

Jesse, i'm gonna toss one more thing at you that could be the problem, the glow plug. I've had glow plugs go bad on me and cause the same problem your talking about. Try a fresh plug before you go nuts doing adjustments.

I will try that for sure I have a brandnew one that came with it, then I will try out the lsn, If I can't get her going again do you think I could bring it by so you can help me out. Hopefully we can go out and have some fun with them and you can blow me away and my novice driving lol

 

[DirtRacinFool]

If I can't get her going again do you think I could bring it by so you can help me out. Hopefully we can go out and have some fun with them and you can blow me away and my novice driving lol

Yeah I'd be happy to help, I'll tune it up so you can give me a run for the money! LOL

 

[JESSE G]

Alright that sounds good, I want to try to get it going my self first pride thing I guess lmao :jk: I really want to get together with you and go run them that would be a blast and I need to get out of this house more often I'm going insane!!!! I still havent gotten to my boys Rustler yet, my back has been kicking my butt lol. But i got some meds today and feel better .

 

[kx250ryder]

. . . What I do now for jetting is pretty simple, and has taken most of the frustration out.

1. run the car, with varying speeds (high rev and low rev), then bring it in and temp. it.

2. Adjust the high speed needle until the temp is where you want it (200 or so for break in, maybe 220-250 for normal running).

3. Adjust low end needle until proper acceleration is desired. A good frame of reference would be to pinch your fuel line right next to the carb nipple, and it should kill the engine between 3-5 seconds later.

4. Re-check top end, and adjust to temp.

5. Re-check low end, and adjust for acceleration.

6. Set idle as high as possible without making the vehicle move.

That should get you there. So each day, you spend about a half a tank setting up, and after that, you may just spin the lsn or hsn an 1/8th one way or the other as the weather changes.

One side note: I have noticed that my car takes the better part of a tank full to get up to 200 degrees. So I would suggest running a tank just to get up to temps, before you start really trying to tune.

Hah. I quoted myself. Try the above (not quoting yourself, but the tuning tips).

 

[JESSE G]

Thanks for all of the advice guys, I will see what I can do with it tomorrow

 

[JESSE G]

I came across something else that I think might be causing my problem, The pipe is missing the nipple for the line that goes back to the tank, The line is just shoved in the pipe. I was thinking at low rpm,s It wasn't getting enough vaccume to keep the fuel flow going, could this be my Problem with it not idle?"