Hi this may seem silly to some of you but my doblo is finding it harder to start in the colder weather in scotland its an 06 reg and done 76k miles so i have just changed the timing belt on it and was looking for the glow polug location but cant seem to find them i was told sopmething about a glow polug in the water system but never seen one i wonder if anyone can shed some light on this fact please, in my past exp with older cars the glow plugs are usually around the injectors. many thanks in advance :bang:

At least two of them are not easy to remove depending on your engine.
Fit the best Bosch type Duratherm i think is the type. They will last longer.

anything to do with your last fault? (which I assume was fixed?)

https://www.fiatforum.com/doblo/150028-2-doblo-keys-wont-start-my-car.html?p=2226547

The glow plugs are burried in the viod behing the injectors. The feed wires just pull off but you will need a long box spanner to get the reach to the hexagon. 2 & 3 are easier to get at than 1 & 2. Be careful not to drop them when lifting out, advisable to use a magnetic probe if you have one. Good luck.