Originally Posted by nitro coffee

I know! its damned if ya do damned if you dont. Unless you oil the rings each time, which I dont. I use residual oil around the carb or engine and rub it on but dont bust out the oil can each carb install. I dont think most do.
I need to stop swapping carbs! lol Im trying to find out why the grp carb isnt tuning as well as the Nova carb. There may have been a leak somewhere at the time as well, may not have even been the grp carb giving running issues.
The one thing I hate about nitro is the fact that you need to check 8 different things to find the cause of 1 issue. I think I have an air leak at the head currently, not the carb. Ill resolve this with a better fitting plug hopefully. But the carb issue, I really want to love the grp carb on the grp engine but Im just not at all
confident in it so far. I ran the carb twice and didnt like how it ran both times. Couldn't dial in a tune, extremely sensitive to small needle changes. The last time I ran the grp carb was before this thread started and this thread issue.
When I ran the grp carb there was no throttle sticking. Everything was good then except the carb was so sensitive to tune, extremely. Not any fun at all. I heard grp tune well and easy. I haven't seen that yet.
The engine isnt fully broke in tho either. under half gallon on it.