Nitro Engine Problem

[Michael314]

Hello everyone,

I have an HPI Bullet 3.0 nitro which I've ran for about 7 tanks and everything went well. Last time though, I tried to run it, the engine started but it doesn't rev up when I accelerate and the car doesn't move at all, also I've seen fuel go through the pressure line which goes from the exhaust to the tank.
I've searched the internet for 2 days in order to find the problem, but with no success. Any help would be appreciated.

 

[Childresshunt]

While the car is running it is impossible for fuel to go through the pressure line bc of the pressure coming from the pipe which works as your fuel pump. whats it do when you apply the throttle
if you have fuel in your pressure line you need to check your fuel lines for cracks or cuts but when it wasn't running if you had it upside down some fuel could have went into the pressure line but should be pushed back into the tank

 

[Michael314]

It used to simply do nothing when I applied throttle, the servo would move but nothing happened to the engine.
I somehow managed to make it accelerate again, only that it would stall immediately if it was on the ground. I lifted it off the ground and accelerated slightly so that it didn't stall until it could run on the ground. I don't know if it works 100% correct right now, because I can't test it outside since it's night time over here right now .
I still can't tell what was the problem.

 

[Childresshunt]

If it was opening your carb something should have happened your carb is opening right. Does the engine bog when you apply throttle like its trying to move

 

[Michael314]

The engine didn't bog, the revs didn't go up or down, nothing happened, just the servo moving. Also, it had problems maintaining idle state, all this while it had been working perfectly fine 2 days before

 

[Childresshunt]

and your carb barrel was opening

 

[Michael314]

Hm... funny how I didn't think about that
Now it seems to be opening fine, I don't know if it opened before.

 

[Childresshunt]

It couldnt of been opening bc if it would run and the barrel was opening the engine would have done something whether it be speed off or just die. just bc your servo is moving doesn't mean the barrel is if you have a rotary carb you prob need to tighten the nut that holds the rotary arm in place

 

[Michael314]

It's not rotary, but I think you are right regarding the barrel not opening. Still strange since the car is almost like brand new

 

[Childresshunt]

Yea that is strange i dont guess I've ever had that problem b4 besides forgetting to reattach the linkage to the carb