Garyjb

Hi trying to help my mate fix his transit connect. It had a flat battery he jumped it and started fine! Went for a drive and fuel light came on. He went and go diesel and after trying to restart it at the fuel station it would no longer crank/start. Tried towing it and bumping it Checked fuses I can manually hot wire the starter and can turn the engine over. So start motor is ok. Anything eles I can check? Thanks