Peugeot jetforce tsdi

Good evening and that I have the following problem with my peugeot jetforce tsdi bought this 3 weeks ago with the knowledge he is defective talking does not start standing also 5 years ca ignition spark is there and if I use startpilot then he starts. I can give gas to 10,000 turns then he suddenly goes out have ordered me another ignition candle with 2 electrodes since I have read that this ignition candle needs there is a possibility to clean the injection nozzles without these a how to install e.g. with injection cleaner? The scooter has run almost 12,000km and is built in 2003 I would like only advice from people who know this model and also the childhood diseases Thanks in advance Mfg