you're running WAY TOO rich! lean it out man! if you're breaking it in, the fluid in the exhaust is fine. after you're fully tuned, you shouldn't have to pour out any liquid!

Lean your HSN a half turn and try again! then re-adjust in 1-hour increments from then on. Make sure you've got smoke, not too much, not too little. Making sure that you've got a steady stream of blue smoke coming out when you're running 1/2 throttle and during WOT.

Make sure you use a new glow plug that corresponds to your fuel. 20% go for medium hot (O.S. #8 plug, or equivalent). Running too rich fouls your plug.

devsynski - he's running rich. He needs to lean it, not richen it!