Originally Posted by
nitro coffee
I did tear the engine down fully and cleaned it entirely!! I always do. Thats why Im baffled. Some good response here guys thanks. Running without the carb throat oring in the past hasn't caused this issue. Although it may have been there before just to a much less degree.
That could be why I could never get a truley dialed tune on it. I always thought about not having that 1 little oring on carb throat can lead to issues or not?
So its either the oring on carb throat not being there or the factory plug not seating flush in the combustion chamber, is what we have so far. These were my thoughts as well. Ok time to go back to an OS plug (which was what I was going to try anyway) and the stock carb I will try.
I want to use the Novarossi carb of course with the throat oring but its doesnt seat all the way in the block with the oring. That's the only reason why Im not using it.
Tearing down an engine completely. every time you run is the worst thing you can do, You can lose parts, damage threads or worse??. That o-ring for the carb throat is important. That is causing an air leak and over time will get worse causing problems later. A loose glow plug won't cause the problems you're having. It will just start easier and vibrate looser and loser until it pops out and engine will stop. Swapping carbs from one brand isn't such a good idea either?