What can this be???????????

Hello people!!!!!! I am actually a VW and Opel screwdriver! Now I have a problem. My Mam has bought a Fiat Tempra combo. Such a great car Only now after two months lights up every now and then the lamp for the injection. It lights up a par second or a par minute but always goes out. Have already looked up the plugs and the mini spark plugs :-)). But don’t know where to look at the car :-(This is a model: Fiat Tempra Combo BJ: 2 5.9.1995 ccm:1581 Kw:66kw zu:4001 zu:686 Sorry, I haven’t got the engine code yet 🙂