Welcome to JUST ANSWER heavy equipment. With many years of experience, I look forward to doing my best to help in your situation. Have you checked the glow plug system, starting at the glow plug relay on top of the engine? It looks like a starter relay, and when the key is turned on, it should click closed, turning on the glow plugs. If it doesn't close, check it for voltage coming to it. If it is closing and sending power on, the valves covers will need to be removed and each glow plug connector will need to be checked for voltage. If you have voltage, it might be a good time to replace the glow plugs, especilly if they have not been changed since new. Let me know. Thank you.
Thank you for your answer.I was thinging glow plugs but was'nt sure.I will check for voltage as you discribed.One question.How much voltage should there be?
Yes relay clicks and i have voltage at the glow plug connectors.