Basically I have a old 2001 tamiya nitro subaru impreza wrx monte carlo 99 and I had restored it not to long ago. So basically it was running fine but I decided to look up the original manual and change the carb idle setting to it's original (1mm) and suddenly it started but then died after a few seconds I did some investigating and what I think is happening is that the fuel that was manually pumped in to the engine is used but there isnt enough pressure built up for the fuel to be pressed back in to the engine. The problem may be as when I as trouble shooting it for this I was running it on half tank not full maybe full tank will work? I will try this soon but if I dont manage I will open the muffler and inspect the pressure outlet, it may be dirty, but there again I have been running a new muffler for only 2 months and it ran fine. Anyway sorry for all my babble tbh I have no clue it would be soooo helpful if you could suggest anything