Tuning of the traxxas engines is fairly easy once they are broke in. Most you probably ever will need to adjust is the High Speed Needle.Counter Clockwise willrichen the air fuel mixtureand Clockwise willlean the mix. The Traxxasmanual comes witha few tips on weather conditions for different days.You may need to perform alittle tweaking of the HSNif you have drastic tempature changes. Fixed Typo on needle settings.

Looking another post you made in another part of the forum says you have owned nitros before so this is just information for others that may not know this

I am new to this forum and just starting to look around how I can help others with questions with my 12+ years of R/C experience.

I generally spend a few minutes warming up theengines I own then tweak them for the day. Does not take too long in the first 5 minutesyou will learn from the sound and trail of smoke how it is running.


As John says you always want to have a healthy trail of smoke when running. One of the things I like to suggest is cut a 1 inch round hole in the windshield to increase air flow to the engine. This improves coolingof the engine. I own the original Nitro 4 Tec with the Pro .15 engine and have had it since 1999. I have not run it in about6 years butit ran strong the last time I fired it up.

Since you are new I will provide a little more information on care of the engine. After running for the day run the fuel tank dry or pour out the extra fuel of the tank then start it a few times to get all of the fuel out of the engine. Let it cool for a bit then clean around the air filter and remove it. Disconnect the blue wire than Pour in some after run oil and use the easy start to move the oil through the engine. Just a few seconds is all you need.

Clean the air filter of all the dirt it collected while you played. I like to do this in a sink with dish soapand dry it. This is a recomendation purchase some extra air filters so you can put a clean one in with fresh oil on it. Once it is dry reoil it with the Air Filter Oil that came in your kit.

I like to move the piston to the bottom of the compression stroke until the next time I go to play. The engines use what is called a pinch type seal instead of rings on the piston so moving the piston to the bottom of the compression stroke will assist in keeping your engine healthy and strong for many gallons of fuel.

Hope all this information helps you out </p>