I started the engine for the first time this season. It started ok but doesn't hold idle speed. In order to keep it running I need to constantly play with throttle handle. <br />If I don't, then it stalls. Right before it stalls a smoke cloud comes from under the flame arrestor with a "sneezing" sound. <br /><br />The manofold and riser were replaced before starting attempt. Any suggestions please ???
<br />Thank you guys. I also forgot to mention something. There is a threded opening in the new manifold I installed. It is on the same side of the manifold where the bolts hold the manifold to head. I checked the old manifold and noticed that there was no threaded hole on the old one, it is just solid welding spot there. Is it possible to have this problem because of this? As the engine stalls I see a little bit of smoke comming out of that hole. Maybe it should be closed? I have no idea what it is for.