I have a 1993 toyota vx land cruiser, there is a H4 swith at the upper dashboard just below the aircon duct, what is this for? My cruiser is petrol, i want to change it to diesel engine, what the model of diesel engine that would just bolt on to this? thanks
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Re: H4 switch, engine
H4 stands for "4 wheel drive; High Range".
Regarding changing to a diesel, you are in for a lot of problems, I am sorry to say. There is a multitude of things that have to be changed, IF the diesel could bolt to your transmission, which it will not. This would be a really,REALLY expensive undertaking.
Personally, I would not attempt it.
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The only way pressure can build up in the radiator is for combustion gasses to leak into the cooling system. This is usualy from a blown head gasket, a cracked cylinder head or a porous block. These things should have been checked for when the engine was rebuilt. Assuming it was done by an engine reconditioning service.
Sorry, no photos or step by step. But the blower motor is usually quite easy to remove-just 3 screws hold it in place. Unplug the connector, remove holding screws, and pull out the motor with the roller drum (fan) attached. Then you will be able to see the problem. Good luck.
Hard to tell without looking, but, my best guess is, if both the pump and box are working properly, you may have seized ball joints, or seized "Rzeppa" joints. The Rzeppa joint is inside the big "ball & socket" thingy at each end of the front axle tube. On top of the ball/socket assembly, there is a plug. Open it & see if there is any lube in there. It just may be dry; this is maintenance item, and it is commonly ignored by Landcruiser owners.