Any idea why my Derbi Red Rocket scooter engine is dying at full throttle?
by Adam
(Perth City, Western Australia, Australia)
Hi... I have a Derbi Red Rocket 50cc scooter, 2 stroke, auto oil feed, air cooled. The fault in question is the engine loses power on full throttle and is sluggish at 1/2 throttle after approx 2-3 mins of starting it.
I experienced this fault a couple of times before. Briefly when going up steep hills, I come to a stop to let cars past (it doesn't stall), I ride off and it's fine. Happened about 2 times in the last month.
Now today as I ride home from work, the bike completely loses top end power (still doesn't stall) but keeps its loss of power. I have tried it after leaving it a while to cool, but still loses power after 2-3 minutes every time now.
I suspect a blocked carbi valve poss into the float chamber? Can anyone verify or help on this issue?
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