Hi I recently brought my first nitro car from my local model shop, it's a used savage 21 with a go 25 engine he said he never sells used trucks but he knew this was a good one because it used to be his, when I first got it it needed a new glow plug so he obvs don't try it, took it back home started after 2-3 pulls had it running round for 2 min then all of a sudden it was like it was struggling to move and over revving then it cut out. The pull cord got jammed in and stuck. Got that sorted and now I struggle to start it when it does start it runs rubbish cuts out after a few min, I tried setting the pins to flush but now it not start up
any help on what to do or just take it back and buy a new one?