R40 engine or clutch problem ?

[nitrolight]

Finally everything is working except for one annoying thing...
I'm driving down the straight away of the track, I let off the gas before the corner, but the car is still driving forward... it feels like it's driving at 20% throttle... It's like the engine won't rev down when I let off the throttle and the clutch is still engaged... It seems to take a few sec's... Even when I come to a stop, the engine seems to rev a little high for a few sec's then settles down...

OS MAX 12TZ motor with temp 230 after a few laps, plenty of blue smoke, when I pinch the fuel line it takes about 3-4 sec's before it dies...

I've doubled the length of the fuel line to eliminate air bubbles... I don't think that caused this problem...

I've re-adjusted the clutch to engage at a higher RPM this seemed to help
a little... Should I keep going in this direction to solve the problem ?

 

[Diver6127]

Is this a new engine? If it is, just remember that sometimes it takes an engine the better part of a gallon to be fully woken up or broken in. With this in mind, it has been normal for all my engines (nova based) to do this but the situation disappears after about 1/2-3/4 gallon.

 

[nitrolight]

This is a new engine, maybe 1/4 of a gallon...
That's a relief... Thanks Diver