Traxxas520

I just recently bought a used traxxas Nitro evader from a friend. It has a new engine with new piston and sleeve. When i first tried getting the engine running, there was fuel everywhere and it seemed to be leaking from the carborator. The first thought was there was a bad o ring in the carb, but that was replaced. The fuel leaking has stopped, but the engine still wont stay running. my hobby store is now saying that i need a new engine. Are they just trying to make more money off of me or what? brand new piston, and sleeve. new o rings in the carb. does anyone have any ideas? I really dont think i need a new engine.

Shuming

First you brought it used. Second how do you know the engine was "new"? A brand new piston and sleeve dont account for bearings, seals, cracks, leaks, conrod, crank, and the carb itself. if you are absolutly sure that it is not leaking, then it could be a clutch issue, or just tuning. Now i for one has been around the block a couple times, I trust my LHS. He would not sell me something i dont need. And if for some strange reason I dont know what the problems is ( that NEVER happens, I know EVERYTHING ) he will explain to me in detail why it needs to be replaced. But on the upside, if you buy a NEW engines, you KNOWits new.

Traxxas520

well, i trust my friend that the engine is new, because the HS also said that it seemed to be new. I guess im just asking about other problems it could be. I am new to nitro engines but it seems like there could be plenty else wrong. I trust my store, but so for 3 different techs have looked at it, and come up with 3 different problems. First the carb needed a new o ring, then it was the piston and sleeve, now i need a whole new engine. Ive seen the car run, it just doesnt stay running: which would be a problem.

Shuming

How was the engine broken in? Not breaking in an engine correctly, is just as bad as running it with no filter....

blktransam

iTrader: (59)

no such vehicle exsists....

Traxxas520

the engine has not been broken in yet. right before i recieved the car, the new engine was put on and given to me so i could start again fresh. just need to get it running long enough so it can be tuned and broken in.

Traxxas520

"rustler" sorry

Shuming

Oh read the breakin bible at the top of the thread........theres one for tuning and breaking in. plenty of vids on utube.

Heat it up with a heat gun first .....

Traxxas520

so this is back to my original question, my hobby shop is telling me i need a new engine. Should i try and get it working on my own before investing another 100 bucks?

Slider30250

Yes.

Traxxas520

ok, thanks for the help guys.

draggin87

iTrader: (33)

have you tried adjusting you idle, or replacing the glow plug?

bacchus

iTrader: (8)

Oh well if your breaking in the new piston/sleeve and have gone back to factory needle settings then yeah its probably sloppy rich and won't idle. May need to lean out the LSN to get it to idle.

dreaux

iTrader: (5)

My money is on the exhaust gasket.

but it could be something as simple as the exhaust gasket. If you are running at factory settings i have actually had it so rich that when i pick up the car or move it, oil and fuel would come flooding out the end of my exhaust pipe. And of course i thought i had a leak.

If it is not these things, then my next guess is the front bearing.

trevor15308

iTrader: (3)

i wuld just buy a new one thereare so many things that could go wrong dont waste ur time,. i did the same thing and i spent more than a new engine cost