When diesel engines are difficult to start, most common causes are :
1. Glow plug system. Faulty glow plugs or its wiring system should be checked.
2. Low compression. You would need a compresison test to find out.
3. Air trapped in system, this could be due to supply hoses leakages.
4. Fuel pump fault.
Friday, November 20th, 2009 AT 3:04 PM