Got a husky tc 86 for my son for Xmas, it had quite a bit of smoke coming out of it had the engine out nee seals piston the lot done but it still smoked. Man in the garage checked it over said he couldn’t find a fault everything was brand new, got it back started ticked over for over 20 mins. Started it again after Xmas and it started then cut out with a bit of power to it put another spark plug in exactly the same but had to change the spark plug for it to start. Bought a new spark plug tan perfect then today it’s started and cut out again. Anyone have any ideas or come across this before