Is my OS 50 dead?

[trex600crasher]

At the end of a nice flight this morning I started to lose power. Landed, and my engine acted flooded. Worked on that, changed glow plug etc. That wasn't it. Would not start. Next found a large tear in the fuel tube going into the muffler. Changed that. Now it will only start if I give it almost half throttle. I checked the tanks, clunks and all lines. Have been running nice and cool. Did flying briefely with this torn tubing fry my engine?

[Mercuriell]

Wouldn't have thought so - how is your compression - does the piston look cooked - is the piston ring intact. Might be some crap in the needle valve or blocked filter - maybe change the latter and try again.

[trex600crasher]

upon closer inspection I found a motor bolt that was not in all the way. Some fuel had leaked out from there I am assuming. I have tightened that, replaced all fuel lines, cleaned filters, clunks etc... Will give it a try in the am. Will let you know and thanks for the help.

[benzmaster]

if you have compression, your motor is not dead.
check all the screw on the top around the glow plug because it tends to unscrew.
(sorry i don't know the name of this blue stuff..)
cocooooo !

PS : If your motor loose power like buuuuuuuuuuuuuuuuh, land imediatly and check if it's not too hot. it may be too lean. I broke two motors like that.

[ckoelliker]

If you are unsure about the condition of the motor it is better to go on and inspect it. Look for the obvious hole in the piston, bad ring, and check the piston liner for scratches. If the ring or bearings are bad and you continue to fly it, the damage will only be worse.