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My new savage break in problem

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i was wondering how far the lsn goes in. It just keeps screwing and screwing. It doesn't have a stopping point. It just gets a harder and harder to screw. The reason why i did that is because it isnt running right. It will crank right up and as soon as u crank it up it has good excelleration then it just want to bog down and cut off.
 
rctrey said:
i was wondering how far the lsn goes in. It just keeps screwing and screwing. It doesn't have a stopping point. It just gets a harder and harder to screw. The reason why i did that is because it isnt running right. It will crank right up and as soon as u crank it up it has good excelleration then it just want to bog down and cut off.
Click to expand...

Well I'm learning the tuning thing myself, but I think you went to far clockwise on the LSN. Your running rich. At some point you should have adjusted your HSN to lean it out. I had that same problem with my Tmaxx. Pinch your fuel line and see how long it takes for it to cut-off. You know your LSN is set correctly when it takes 2-3 seconds for your savage to cut-off. If it takes longer, you gotta lean it. If it takes less than 2-3 seconds, then you gotta richen it. When you are in the area of 2-3 seconds then you can go about adjusting the HSN accordingly. After the HSN is adjusted accordingly, go back and check the LSN once again that it is set according to your HSN adjustment. If all fails, go back to factory settings and start over.

Someone please let me know if I am right or wrong on this. I am a 4 month old newbie and am gradually learning the tuning process as well.
 
You're getting there, baldie. Keep it up, and I can retire.
rctrey, by seeing how far the LSN goes in, you have totally messed up anything near where it should run.
You need to reset both needles to factory specs and start from scratch.
 
Thanks for reminding me about the pinch test. I forgot all about that. But u have to be careful about doing that because that makes it run lean.
 
It only runs lean for the last second till it shuts off. It's the same as running out of fuel, and is an important test to determine the LSN setting.
 
But it will barely idle when i crank it up even hot. And the first time i gun it, it has good excelleration then it will just bog and i let it idle and then it has good excelleration then bogs again. I just keep on leaning out the lsn. What should i do? Is this just a sign of it running really rich.
 
If it idles well, and has good acceleration, STOP messing with the LSN. WOT is adjusted with the HSN. If it's bogging when you hit full throttle, make note of where it is set and start to lean the HSN by 1/8 turns to see if it improves. Since I can't see it or hear it, I can only guess that it's rich on the HSN. If it starts to improve, lean it slightly more after each try till it runs right. If it does NOT improve, reset the HSN to where you started, but do the same adjustment to the rich side.
 
But the thing is it will barely idle when i crank it and then it just has good excelleration when i first crank it then it will barely run when i give it full throttle. It just bogs and eventually stalls. I see bubbles in the fuel line sometimes but i can't figure out where they are coming from. I can't find a hole.
 
If it barely idles, raise your idle screw till it runs smoothly without making the car want to creep forward.
When it's up to temp, hold it off the ground and start to blip the throttle in short shots to see if you can get it to rev up enough to blow out the excess oil buildup.
Also, let me know what the temp is at idle when it's warmed up, and how many seconds you get with the pinch test.
 
it does idle high enough it just cuts out. Last time i checked i had 6 seconds, and that is why i keep on leaning out the lsn.
 
i also have a hard time of telling when the lsn is closed. To me it just keeps on going. Have i already messed something up?
 
Sounds like you stripped something by trying to close it all the way. If that's the case, it's leaking air there and it will never adjust properly.
 
I just took it to the hobby shop and see what they say. i think it is way off.
 
I had same problem...

When I first got my Savage 25 I had the same problems, it is just part of the break-in process. In fact I had to run about fifteen full tanks before mine was running "the way it was supposed to". I just ran mine a few week ago after letting it sit all winter in my garage. My dad said it would need retuned and a new glow plug, he said it would most likely not start. Got everything set up and started the truck right away, and "ran the way it is supposed to". Havn't been able to play with it much lately because of Ohio weather. I am thinking of getting the 3-speed tranny mod for it as well. Just keep running it as much as you can. :)
 
rctrey said:
i also have a hard time of telling when the lsn is closed. To me it just keeps on going. Have i already messed something up?
Click to expand...

Thats because as you tighten the LSN you are forcing the LSN into the seat and you are pulling the slide open. Read this:

http://www.hpiracing.com/rcforum/showthread.php?threadid=68210

The S-25 is a simple motor to tune. Use the above link to go back to the factory settings and start from there. Adjust the HSN before touching the LSN.
 
rctrey said:
I got bought a savage 25 today and am breaking it in right now. I am on the first step and the engine idle really fast and when it warms up it kinda sounds like it is overheating or something like that. Do i just need to adjust the idle screw or what. Does it come from the factory with the needles set to breakin settings.
Click to expand...
i had the same problem with my 25 enginewhich ended up a seized 25 engine
hope its better for you.


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