View Full Version : engine dies, help
03-25-2003, 05:09 PM
I got my rustler idleing great today, it will idle forever and not shut off. But when i give it throttle then slow down, turn, and hit the break, it will shut off. it will also sputter off the line and when slowing down. am i running too rich or too lean and on which needle(s) thanks
03-25-2003, 07:49 PM
richin the big needle some (the high speed) out-rich in-lean
if it bogs even more than ur to rich so lean it alil more than from the start and see if that helps
03-25-2003, 07:59 PM
Engine stalls when brakes are applied
Engine idle speed set too low
Adjust the idle speed screw on the carburetor.
http://www.traxxas.com/support/troubleshooting/nitro/nrustler/trx_trouble_trx25_e06.htm to answer the Engine chokes/stalls under acceleration and at speed question.
These are found on the troubleshooting page.
I would tell you to adjust your HSN and your LSN but we would be doing that forever. If you go to the troubleshooting page it will pinpoint your issue a lot quicker.
03-25-2003, 09:07 PM
You're idle screw is set to where when you apply the brakes the carb closes. With the air filter off, engine off, and electronics on turn the idle screw clockwise and apply throttle and brake until the carb does not close past idle when the brake is applied.
As for your other problems I would reccommend reseting your high and low-speed needles back to the factory settings and start tuning all over again.
Remember, give your engine 4-5 minutes to "warm up" to running temps before you attempt to tune it.
Adjust the high speed needle (HSN) first. The best way to do this is to run your truck to top speed for several passes. Lean the needle out 1/8th turn after every couple passes until you cannot tell a difference in performance. Then back the needle out 1/8th turn.
For the low-end I like to bring the truck to a stop, let it idle for about 5-10 secs. and then slam the trigger. If the truck boggs down then you are too rich. If it begins to "choke out" then you are too lean. When tuning the low-end you should work in 1/16th turn increments.
That should get you started. Remember, you want a good and steady stream of smoke coming from the exhaust when you are running. And, it is better to be a little too rich than a little too lean.
03-25-2003, 09:58 PM
thanks a lot everyone. whenever i get the chance again, i will give my engine a while to get up to normal temps. for the cvx with an aftermarket cooling head the temp is like 200F right? also, how old is too old for fuel. i may need to buy some more soon, and more $5 plugs.
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