hey guys i got an os 18 tz tx for my nitro rustler. ive been useing it for a while now and the other day the pull start broke. So i took it off and now im useing a drill with the right size to fit the one way and been starting it that way. it makes a crazy sound at the start but it starts it. I just wanted to know theres lots of nasty build of dirt oil and grum all over my motor is this going to hurt the motors life span? or will nitro blast just fix it and put a new pull start on? Also i ran it in a baseball field and it fliped drifting and the air filter fell off and filled every thing with dirt i cleaned out the best i could what will happen if there is still stuff in there? what can i do to get it out? thank you if you can help me

Ok man here is what your going to do. To clean my motor I use Carb And Throttle body cleaner feom Advanced Auto Parts. Clean the outside of the motor only with that then spray some WD40 on the one way bearing. Not to much. Now for the inside of the motor.
1) Remove the muffler from the motor.
2) Remove the motor from the car.
3) Remove the exhaust manifold.
4) Remove the carb.
5) Remove the cooling head.
6) Make sure the piston is at BOTTOM DEAD CENTER.
7) Spray liberal amounts of WD40 throught the opening where the carb goes and through all the ports. Let it drain out from the carb opening and repeat several times. I can not tell you it will be 100% clean but it will get most of the gunk out.
If you want to go all out then you can take the entire engine apart and clean everything seperatly with WD40.

Make sure you clean the outside of your motor on a regular basis bcuz dirt build up will hurt it in the long run. It acts as an insulator and your motor can over heat.

Also buy a new pull start and cover up that one way bearing to keep it protected from dirt.

Good Luck.

but be sides over heating i run it lean will it really damage the motor i take the one way off be for i run it

Removing the one way bearing wont hurt but all the dirt build up will. Especially if you running lean. Dont run to lean cuz that will hurt your motor too as well. Always make sure there is a little smoke coming out of the exhaust.

yeah my hobby shop made it to lean and it cut out the other day and would not start for days!!!!!!!!! well till it cooled down but yeah i try to keep the layer of dirt to a min any thing else youi know that might help me?

Oh yeah if you use the Carb cleaner from any auto parts store make sure you remove the motor first. Its great on the engine but if it gets on any of the plastic parts on your car it could meke them dry and brittle. Forgot to mention that in the beginig. Also use a zip tie to keep your air cleaner on. I tighten it just enough to were I can barely slide it on the carb. But once it is on it will not fall off.