Originally Posted by JustinZac

i just bought a new sirio xxx .12 after being a long time OS user.

the engine has about 15 tanks through it.

the engine runs great - temperature is fine, nice trail of smoke down our straight, and it will idle for over 1 minute and take off great with no bog down.

the problem is, it idles on straight after full throttle.

for example, after going down our straight full throttle then braking for our turn, it idles high and takes like 3-4 seconds before it idles down.

if im holding the car in the air, and i open full throttle for a few seconds, then close it fully, it will idle high for a few seconds before it drops.

if i richen the bottom end any further, it will stall. if i lean the bottom end any more, it begins to hesitiate from a standing start.

if i try the pinch test, i squeeze the fuel line fully, it revs up very highly for a few seconds before dying.

any suggestions???