Hello Bax!

Have a couple of question about my FS 70 Ultimate engine.

I can´t get it to run good. It´s very unstable. I´ll try the proceedure you explained here: http://www.rcuniverse.com/forum/m_28...tm.htm#2881118

Question 1: There is som air bubbles in the tube from the pump to the carb. Not much and not all the time. How much is acceptable?
Question 2: There is som oil coming out of the pump air inlet - the line named D in the manual. The manual says that if there is a noticeable amount of oil coming out, send it in. Is some ok, or is the pump leak.

The engine have had a gallon of fuel. Is it worth wasting fuel - or should I just send it in?

Thanx

1) No air should come out of the pump in the fuel lines.

2) "Noticeable" amount means you can detect that oil is coming out. You have mentioned that you can see it.

The engine should be sent to your O.S. service center for evaluation.