Bill...

I finally mounted an St G2300 on a test stand Tuesday and tried to get it running. I followed all the instructions and used a battery type glow plug driver as well as one plugged in to my flight box. I'm running Omega 10% fuel and am using an electric starter and an 18-8 prop. Initially, after a few seconds with the starter, it starts to run but very weakly and dies after about 5-10 seconds. I tried to get it going again and nothing. It doesn't appear to even think about starting. I changed the glow plug but it made no difference. Seems like fuel is splashing out of the carb. I had the hs needle out 3 turns and tried starting it after opening and closing it a half turn but no difference. I disconnected the glow plug driver and turned the prop by hand. I've done the prop to other engines I have and I definitely feel the compression with them. They are all smaller engines, 2 strokes and 1 4 stroke. But there appears to be little or none with the 2300. I can feel a very slight bump as I turn it but very little. I'm not sure what to do but I followed the troubleshooting section in the manual but had no luck. I went through the same things yesterday in my garage with the same results. I hate to ship it back but I have the 4 Star 120 waiting for an engine and don't know what else to do.

Ed

First off, try setting the carburetor per the instructions at the top of this forum. It may be that the relationship between the high-speed and idle needles is off. Also, don't try to start the engine at full idle, but at 1/4 or 1/3. That will help it get running. If the carb's not set, you can have difficulties at low throttle settings. You can have a loose compression feel until the engine has some running time and the ring gets seated.

If all else fails, we'll need to see the engine. It's possible that something's physically wrong and it doesn't have enoug comprression due to a bad piston or ring. Low compression will keep it from running every time.

Bill...

Thanks for your patience and suggestions. I pretty well hit the wall and decided to ship it to you today. I checked the plumbing in the tank today and all was well. I did use larger brass tubing, the large silicone fuel lne and a large clunk. It's probably something simple but I'm not an engine expert and thought that sending it off to you would be best. HaVve a good weekend...

Ed

When it gets here, we'll check it carefully.

Bill...

On Saturday I took the 2300 to a buddy's house to break in the engine. Still had trouble trying to start the engine at first but we noticed fuel leaking out between the head and case. Something as simple as tightening the bolts which were loose solved the problem. Using Omega 10% and an MAS 18X10 prop got up to about 4100 rpm for the first 5 minutes and after using the pinch test as described in the manual and 32 oz of fuel rpm increased to 7100. The idle was solid at about 2k rpm. We ran out of time but I think it is pretty close to being mounted on the plane. I'll probably run it on the test stand for another 32 oz or so before I mount it on the plane. Do you have any idea what idle and high rpm I can expect with the MAS prop? Thanks again to for all the help and the real quick turnaround. Great product support, Bax!!!

Ed

On our test stand, we run the SuperTigre G2300 with an APC 18 x 10 prop and Omega 10% fuel. We expect to see RPM levels in the low-to-mid-7,000's. That's with the stock muffler. The engine can be safely run up to 10,000 RPM, depending upon the propeller, though most don't go over 9,000.

Your numbers sound about right. Remember, the engine will "come in" over the first few gallons' worth of running, so don't be in a hurry to get it leaned to peak RPM. Work with it gradually and it will be a real "keeper".

Bill...

Just wanted to let you know that today I finally took the 4*120 and the ST G-2300 to the field. I ran over a half gallon of 10% Omega through it on the ground several weeks ago. Also, changed the prop to an 18X8 for break-in. For flying, I changed the prop to an APC 17X6 at the suggestion of one of the guys at the field who runs the same engine but on a different model. I used an 'F' plug and plugged one exhaust pipe of the Bisson muffler. Used a large clunk and large fuel line in the tank, from the tank to a fuel filter and again large fuel line to a brass pipe. Used a short length of medium line to the carb. Got the engine primed and it started right up. It flew the 4*120 great. Did loops at half throttle and once I pointed the nose up and used full throttle and the ST could probably have pulled it out of sight. Thanks again for your support here and it is a great engine...

Glad to hear you've gotten it sorted out.

im really upset with the g 2300 i mean i like the power it runs good at a high idel, but i have it in a hangar 9 funtana and it wont run at a low idel for long without dieing out and i have to land it dead stick. Ive tryied to adjust the low idel valve up and down and even tryied to plug one side of the pitts muffler and still nothing on low side can you please help me, is it me or the carb thanks, Brock Domingue..

I'll be getting my new G2300 tomorrow from Tower. Have seen for myself what this engine will do with the stock muffler. Pulls 10lb+ planes around with ease. Have also seen the trouble they can be running a Pitts style. The fix for this "I've heard" is going with a differant carb like a Perry or OS.
I'm going to run the stock muffler on this 1.20 sized Edge540T because the cowling was already cut for a ST muffler. At least it looks like it was.

"Oops,,,, just read the forum rules for Direct Support. Sorry about posting on someone else's thread."