Hi just noticed that my car is spitting every 10seconds or so on idle its just after been broke in its a standard engine anyone have any idea why ..running good

 

No idea. Got video?

 

Cant notice it on video.. say if you put your hand by a exhaust you can feel the same pressure in exhaust gases on your hand at all times but mine gives a extra push of exhaust gases every few seconds

Maybe its nothing but i think its misfiring or something

 

TPS in spec? I know when my TPS was out of spec slightly a V8 friend of mine was the one who noticed it and sounds very similar to what you are experiencing...it certainly is subtle.

 

If your engine has only recently been rebuilt, try changing the plugs and see if that helps. They may be the old ones, or have been fouled a little with assembly lube etc. from the rebuild.