How about moving to a warmer climate
OK that may not be an option. there are several things to consider. First you should not have a starting problem. Here is a list of items to check:
- Glow plug problem?
- Relay switches for injection pump?
- Low battery not turning the engine fast enough?
- Wrong oil viscosity for cold weather that slows turnover of engine?
- Timing?
- Air mixing with fuel?
I am sure there are others. I think you best bet is to have a certified mechanic look at this problem. Good Luck!