Hi! I bought a TPH the other day, used 22.800km, built in 2003… I did a test drive, about 15 min, everything went without problems. That was about 3 months ago. It hasn’t been running properly for 2 months. If I turn it on, it starts immediately and so on, but as soon as I give a short gas the speed drops extremely, just so it doesn’t go out. It takes about 20 seconds, then it comes back to speed and I can drive normally for about 1 minute. Then the game goes from new It loses its speed at full throttle and doesn’t pull anymore. I have to stop at the edge and wait again for a short time, then it goes on for a short while. So much for the problem. I have already cleaned the carburettor, it actually gets enough fuel, oil is in it, oil pump works. The previous owner has attached a Technitas Silent Pro and a Naraku air filter mat. It is a 52 HD(Dellorto 17.5 mm carburettor). I have no idea about scooters except for n pair of Youtube videos. and so everything is no problem so I will not go to a workshop to spend unnecessarily a lot of money. Does anyone have suggestions for solutions? Would be very grateful. LG Sammy