trout79

I have a nitro rustler, it has ran great for about 2 months. But latelyafter it runs for about 10 minutes it losses about 50% of its power. If anyone has any ideas please let me know.

dittch

could you give some more details? What are the symptoms, is it bogging, etc? Also, how old is the motor? You said you have had it 2 months but did you get it used?

My buddy bought a new nitro rustler and within 2 months it started running pretty bad, didn't hold a tune, bogging, etc....was giving symptoms of an air leak. He's new to nitro, so I fixed it for him. I pulled the engine, cleaned it up. cleaned and sealed the carb, sealed the backplate and put in a new exhaust gasket. Also checked the head screws and made sure they weren't loose and it wasn't leaking. This is typically what I do before ever running a new engine. Many of them arrive with loose screws, poor sealing.His motor ran like a champ after Ididthat.

note: when I use the word "sealed", I mean I put a small amount of RTVsealant around the mating surfaces. For the carb, I put a very small bead of the sealant around the gasket on the base of the carb.

Your motor may need a once-over like my buddies did

trout79

It actually seems like it needs rebuilt, but it still has plenty of compression. I did check the head screws, and they where fine. what it does is runsfine untilit gets a little warmer out,but the engine is not over heating it just serges in and out of power

trout79

Hey thanks, I just found the screw that holds the front of the exhaust on is very loose. And I would bet that is where my leak wa coming from