Joe,

No, the YS 1.70DZ runs great, even on a glow plug. YS has developed an electronic ignition that still runs on glow fuel. It makes the engine much more efficient. It allows you to lean down the needles and uses more fuel. You should get comfortable 300 flights before you will need to do a rebuild on the DZ. I would recommend that you be very selective in fuels. The Cool Power ones seem to work the best. I personally run this, and that is also what Richard at YS will recommend.

I am at about 60% the fuel consumption since I switched over to the CDI, which is definitely a major savings on the 30% fuel.

Arch