ARRGGGGHHHHHHHHHHHHHHH!!!!!!!!!!
I just spent 8 hours trying to get my Zenoah 26 to run..........
It will pop with the choke closed, but it will only fire for three flips once the choke is off, then nothing.
I took the carb apart and there is a deformity on one of the flapper valves on the fibre plate. I am thinking this could be it....

THoughts anyone?

It is getting good spark...
Engine is brand spankin new
I tried to adust the low speed and high speed needles too...

Sometimes new engines take a bit of doing to get them to start pumping gas. If the engine is mounted upright on a test stand remove the plug and prime through the plug hole, or hand prime through the carb and have a go at starting, or better still if available use an electric starter and that should get you going. Also just check that both carb needles are at least 1.5 turns open just to get the engine going.

Karol

I ran it today for about 20 minutes total. It got worse and worse as it went. Anything above 6200 RPM would cause the engine to go lean and quit. Like it was getting leaner and leaner each time I tried it. So, I went to the local small engine shop and picked up a carb kit to see it that would help, but nope no change. This piece of cr@p is going back!!!! I have totally had it. My frustration factor is so high right now!!!!!!!!!!!!!! Horizon Hobbies sait to send it to them and they would fix it, but I would sooner send it to the shop I bought it from.

Did you install a easy link carb manifold??
If you did, check your throttle butterfly and see if its reversed. This is a major gotcha for new gas users.
Open the choke and shine a light in the carb. You should see the threads of the screw that holds on the butterfly. If you see the screw head, the butterfly is 180 degrees out.

NICE!!!!!!!!!!!
That is a great point. ...And I have to admit, I had encountered the same thing.

I DO have the easy link manifold installed (with carriage screws vs. the hex drive screws, so they don't interfere with the seating of the carb.
I can choke it til it burps and then it will reluctantly start, but dies withing 3-4 seconds (lean condition).

Yahoooo! Nailed down the problem finally!

It seems that the carb spacer block was mounted properly, but there are two holes on the rear mounting surface of the carb and only one is used as the pressure/vacuum signal hole for the fuel pump. Well, I had the carb mounted with the wrong hole lined up with this port, and hence no fuel was being pumped.
On the down side, the low and high speed needles are facing down and to the front (propeller), so adjusting the mixture is a bit dangerous and must be done very carefully.

I'm glad to hear that you finally got your new engine going, as most of the times it's just something minor that needs to be sorted out.

Adjusting the carb needles when they are facing towards the prop should NEVER be attempted while the engine is running. I know it' a bit of a hassle having to stop and start each time you make an adjustment but it's MUCH safer for your hand that way.

Karol

Agreed, Those screws are in a bad place!!