RE: YS 170 DZ CDI
Sorry to ressurect an old thread, but I'm having issues with my 170Cdi not starting and flooding VERY easily.
I'm wondering whether it's the plug, but also I've discovered I have 2 diaphragms fitted to the pump and i'm not sure this should be the case! (the black one and the orange one). I'm guessing I have a newer pump as the poppet valves meet with the brass inserts in the pump body.
On the very rare occasions I can get it to run it runs great, albeit a little rich at bottom end as it slowly loads up at idle. Once flooded though that's it for the day. it will just fire in a nasty way every 10 turns of the prop. Ocasionally it shoots a flame out the exhaust with a loud pop!
Reg is 1 turn out from flush and needle is 3/4 turn out. Fuel is 20 oil 20 nitro.
Next step is to buy a new plug.
Regards,
Steve