Lock nut in engine

Without additional information about the specific model and trim of your 2005 turbo diesel 4x4 Courier, it's difficult to say exactly which rear differential centers would fit your vehicle. However, I can offer some general guidance to help you with your search.
The best way to ensure that you get the correct rear differential center for your vehicle is to consult the vehicle's owner's manual or contact a dealer or mechanic who specializes in your make and model of vehicle. They will be able to provide you with information on the exact specifications of the differential and any compatible replacements.
That said, some possible options to consider include rear differential centers from other Ford vehicles that share the same platform or drivetrain as your Courier. For example, the Mazda B-series pickup truck, which was sold in some markets as a Ford Ranger, may share some common components with the Courier. The Ford Explorer and Ford Bronco II are also possibilities, depending on the specifics of your Courier's drivetrain.
It's important to note, however, that even if a differential center from another vehicle fits your Courier, there may still be differences in gear ratios, splines, and other factors that could affect its compatibility and performance. For this reason, it's generally recommended to use a direct replacement part whenever possible.
In any case, I would strongly recommend consulting with a qualified mechanic or parts specialist before making any purchases to ensure that you get the correct part for your vehicle.

New thermostat?

i wouldnt due to the diesel having a heavier built gear box than the petrol but there is adaptor plates that will allow them to fit

intake 0.20mm exaust 0.38mm adjusted with engine cold.

with 1 and 6 fully open - adjust valves 4 [inlet] and 7 [exhaust]

valves 2 and 3 fully open - adjust valves 5 ex and 8 in

valves 4 and 7 fully open - adjust valves 1 ex and 6 in

valves 5 and 8 fully open - adjust valves 2 in and 3 ex

Rotate the engine clockwise only between adjustments

Is that a WL-T engine? Just follow the upper radiator hose going to the engine head, or if your facing the engine, its in the left side at the back of a cam-belt cover, there's a small protruding brass with small terminal wire connected to it.

May be a wre or plug came undone .

Hi Steven was it turning before the head was fitted? Will it turn backwards?? Remove the glow plugs and try to turn it.

• Hello and thank you for the opportunity to assist you. This should be your diagram ---

• If you have any questions, comments or concerns, please, just respond here in this topic and I will happily offer assistance.

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Regards,Tony

Mazda B2200, B2500 and B2600 (6th Generation).

In model year 1998, Mazda B series renews its own international markets. Production at the plant AutoAlliance Thailand began in May 1998. This model is also sold as the Ford Ranger in Europe and Asia, and the Ford Courier in Australia and New Zealand. Production started this year in the factories of companies AutoAlliance Thailand and Ford Motor Philippines. Versions CKD are also assembled in South Africa, Ecuador and Colombia.

The van is sold in over 130 countries under a variety of names. Along with the emblems of Fighter and Ranger in Southeast Asia (except Singapore, which served as the flagship models Proceed Japan), was sold as the Mazda Bounty and Ford Courier in New Zealand, Mazda Bravo in Australia, and Mazda Drifter in South Africa.

Engine options:
2.2 L 2.2 L (2.184 cc) 85 hp (63 kW)
2.5 L (1.998 cc) turbo diesel 118 hp (88 kW)
2.6 L (2.606 cc) 121 hp (90 kW)

Fig. Tighten the exhaust manifold bolts in 2 stages

To install:

1. Clean the mating surfaces on the exhaust manifold and the cylinder head.
   
2. Install a new gasket and the exhaust manifold. Torque the bolts in sequence as follows:
   1. 16 ft. lbs. (23 Nm).
      
   2. 59 ft. lbs. (80 Nm).

Hope helps.

Run a fuel pressure test,may have a bad fuel injecter.