Hi there help my derbi senda 50 has a orange spark not blue and it's very week and won't start can any 1 help me please

Luke, March 2010

the primary ignition coil may be faulty,its behind the generator rotor thats behind the plastic left hand engine cover.you need a special tool to pull it off though dont hit it with a hammer it will destroy it.a good garage will have the right sized magneto extractor.i have a full snap on set of them for all bikes.

adam bike doctor, March 2010

hi there its luke i have tryed new plug today still weak and orange any other ideas thanks

luke, March 2010

U need a white spark rather than blue tbh. Its alot more healthier

Tyler, March 2010

if its orange then the insulator nose is fouled,put a new plug in it and see if it starts then.

adam bike doctor, March 2010