I find it much easier to put a finger over the outlet on the muffler to prime the engine. It works just as well and you don't have you fingers so close to the prop. Finger over the muffler outlet also pressurizes the tank so the fuel is less likely to drain back out of the carb line, and you can see/hear when the fuel reaches the open carb.

The temperature is not an issue. It doesn't really affect these engines until it gets down to about 30 degrees (F), then you have to run them richer.

Try this; glow igniter off the engine, carb wide open, finger over the muffler outlet, turn the engine over (counter-clockwise while in front of the engine) until you see and/or hear fuel in the carb, turn it over two or three more times. Close the carb down to about 1/8 th throttle (with the trim lever on the Tx all the way up), put on the glow igniter and flip the prop briskly. Be careful! Because when (if) the engine starts, it will be spinning at about 3.500 rpm's.

It should at least "pop" within the first couple of "flips", but try it 5 or 6 times. If it doesn't start, remove the glow igniter and "prime it" again.

If it still doesn't start then there's a good chance the needle valve is set wrong, or the glow plug or glow igniter are bad.

You charged you glow igniter overnight right? Have you removed the glow plug and put it into the igniter to make sure both are good? Be careful when you put the plug back in; it's not too hard to cross thread it and ruin the threads, or overtighten and strip the head. Just snug it down with the 4 way glow plug wrench.

To reset the needle valve; carefully screw it all the way in (clockwise), but DO NOT tighten it! (You can screw up the tip.) Then turn it back out about 2 1/2 turns. This should be about the right setting to get a fairly rich run. Repeat the above.

If all of this fails, find someone local to help.

By the way, starting these engines is about a hundred times easier with a starter. At least until you know how, and have it tuned properly.
Dennis-