Engine Trouble
 

I have a new os mas ax 46 ... have flown it one time... and last time i tryed to fly it it kept flooding.... Now i have it back on the plane and the crank barely wants to turn... does any body know what might be going on

RE: Engine Trouble
 

Have you pulled the glow plug to check to see if it is merely hydro-locked?

Did you remember to re-install the VERY EASY TO LOOSE or even spot "spacer" washer under the prop hub?

RE: Engine Trouble
 

Is it binding or does it move freely. I think opjose has hit the nail on the head in both areas.

RE: Engine Trouble
 

If you suspect flooding or hydro-lock, pull the glow plug, close the throttle, and crank it with your electric starter for a second or two. The fuel in the combustion chamber will get sprayed out (so stay clear, and don't get sprayed in the face with it).

My tried and true method for starting up nitro engines is as follows:

1) Prime it - without the glow-starter installed, fully open the throttle, place a finger over the exhaust/muffler outlet, and crank the engine with your electric starter until you see some fuel start to spray into the carb (usually a little sprays up out of the carb as well).

2) Start it - lower the throttle to about 1/2-1/4, put the glow-starter on it, and crank the engine until it starts.

I'd say about 95% of the time, the engine fires right up for me.

Just be careful with the priming step. If you prime it too much, you'll get flooding and possibly hydro-lock. After you try this a few times, you get a feel for how much priming your engine needs to fire up.

RE: Engine Trouble
 

I would agree to most of that , but not to use the electric starter to prime it...it shouldnt take more than 4-5 turns of the prop to get fuel to the carb then close it 1/4 open and put on the ignitor and start it....Rog

RE: Engine Trouble
 

there is no washer i must have lost it are you talking about what they call a thurst washer

RE: Engine Trouble
 

Yes.

The thrust washer is SOOO easy to loose.

[link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXCW52&P=Z]This one - Click me![/link]


It is thin, but provides the needed spacing to keep the drive shaft from hitting the backplate.

Without it your engine may not turn over and it may be damaged.

RE: Engine Trouble
 

Bought a new thurst Washer today and it sovled the problem thanks alot for all the help guys