First off, no its not a MDS... but maybe not much better.

I have a Magnum GP .25, or unknown vintage, but I'm guessing late 80's early 90's. I put it in a CG Eaglet 50 and brought it out to the field today. I tried getting it to run, with fuel of the same vintage.. no go.. It would start and barely idle, but when I took off the glow heater, it died. Also, if I advanced the throttle, it died.

I ran some newer fuel (15%) threw it at home, it would idle ok, but would not rev up. I pulled the hose from the muffler, and I could get it to rev, but then it died. I'm not sure if this was because it was leaning out as there was no tank pressure... I did not try to take the glow heater off this time.

I did notice what appeared to be raw fuel coming from the muffler tip, thinner consistency that the oil that is in the fuel.

Here's the catch, I'm not sure how to tune the carb as I have no manual for the motor. (I have other glow motors, but the have already been tuned and have not been run since the early 90's) I would like to learn how to set it up right... so what can I do. The carb's got 2 screws, (one high and one low needle adjustment?)

Is there a good base line I can use such as turn the for most needle out 3 turns from all the way in and the aft needle 2.5 times out from all the way in and adjust from there?

TIA for any help anyone can provide. I'd like to get this bird into the air...


Ryan