I have been having an on-going engine prob. All 3 of my eninges are doing the same thing. I can start them, and they will idle just fine, I go to run, and they go for a min or two then they just stall out. As far as I can tell, I have not been over-heating the engine.

If it matters the engines are a TH 46, TT 46 and a TT40.

the TH is a rebuilt motor that I just broke in. I am wonering if the low idle is right.

Thanks!

You might be trying to run them to lean . Try opening the needle a few clicks . Maybe check for holes in the fuel lines or possible air leaks on or around the carb .

added to the above, bad fuel, weak glow plug can also cause this. Also it can be too rich...if its too rich the crank case will load up with fuel, and as soon as you go to WOT, it will throw a bunch of fuel into the cylinder, causing the plug to cool too much or just load the piston. You may also find other answers [link=http://cajungatorairboats.com/v-web/bulletin/bb/viewforum.php?f=9&sid=4d92fb3c8c0a23e38fa505f28976 da97]here[/link]