OS 61 FX - Won't run without Glow Igniter
HELP! It's driving me crazy!
New OS 61 FX. Has about 1/2 gallon of very irregular run time. Motor now runs only with glow igniter attached. It will run about 7 seconds at 1/4 throttle with the igniter off.
I have done the following in separate steps so as not to confuse the result:
1. Leaned the engire to the point that it wouldn't run, the backed off 1/4 turn.
2. Changed Glow Plugs
3. Changed Glow Plug ingniters
4. Changed mufflers from Pitts to standard and back
5. Changed gas tank and fuel linies.
6. Checked Head-Bolts and all other fittings
7. Changed props
8. Tripple checked needle valve for dirt etc.
9. Tried with and with/out a fuel filter.
I'm running 10% Nitro mixture. When it is running, it seems to run OK at full throttle and will idle ( a little bit high ). It does not transition quickly from idle to full very smoothly. A little hesitation or total stop depending on needle settting.
Thanks in advance.
Mike