Aixam Crossover Running Rough, Starting & Power Loss Problems

Starts after around 3 - 5 turns of the key, and only gives around 20 miles per gallon. Also has a noisy belt, maybe alternator belt. Just bought the car from a dealer who said it had been serviced.

Car cuts out wait a few minutes and will start drive normal cuts out no pattern. changes coil fuel pump remove tank change engine speed sensor. No codes present Try to read with snap on obd no connection.