Engine won't start ebike 36v 500w

[lukfru]

Hello

I'm a new member on the forum and would like to ask for help

I have self built ebike 36v 500w engine

After 2 months not using it i have recharge the batteries but engine won't start.
engine is with 3 main cables ( green, Blue, Yellow ) and one cube with 7 cables, connected to the controler like this one below

http://s994.photobucket.com/user/lukfru/media/22_zps4c21667e.jpg.html

I have checked the throttle, battery pack and all connection, all looks good for me
However i noticed the engine's main cable ( 3 thick cables inside ) are getting warm when i push the throttle.

Should i check the controller some how, or connect engine on short circuit to check it first ?

I'm appreciate for any suggestion

 

[lukfru]

I forget to add when i push the throttle engine just kick for a second, but don't run

 

[Sacko]

Check the voltage of the battery at full charge.

 

[lukfru]

Hi sacko the batteries are grant, they are 38.2V just after charge ( 3*12V )

 

[Sacko]

Have you checked the voltage under load?

The battery is where I would start looking, but it could be a few things.

 

[Deleted member 4366]

You have either a connection fault on the motor wires or the wrong connection sequence. You cannot always connect colour to colour. Do not use more than a little bit of throttle until it runs correctly otherwise you will blow your controller.

Tell us which motor and controller you have, and then we can help. Here's a table that tells you how to find the correct sequence:

http://www.lsdzs.net/Technical_detail/newsId=33.html