some one must know!!!!!!!!!!!!!!!!!!

[Gatuso86]

right its a cy engine runs fine when idleing runs fine first 8oo yards after that it looses all power leave idleing for 30 seconds it goes well again for another 800 yards ive tryed another working carb not that checked all pipe work not that tryed different plug not that some one must of had this fault or some one who can suggest something!!!!!!!!!!!!!!!!!!!!!!

 

[atom3624]

Sounds like a fuel problem - too rich or too lean, or perhaps the feed gets crimped on acceleration for some reason?
Is the breather working OK - not blocked?
What colour is the plug after a run - check out the other thread on colours?

Al.

 

[atom3624]

Another idea;
When did you last clean your air filter - that could be blocked?

Al.

 

[GLYNSAVAGE]

fuel lines on the right way?

 

[kreb]

fuel filter. it's letting enough through to idle and filling up the bubble but when you gun it its using up the fuel it has stored and can't get enough through to keep running at high revs. happened to me before and that was the problem.

 

[46u]

Is the vent in your gas cap open not clogged up?