Freelander 1 Land rover TD4 2002 injectors suspected

Hello, I own a Land Rover TD4 2002, it does this. When it's morning and it has been there all night, it fires up. Drive up 5 miles, or just let it idle for a bit, turn it off, won't start. It turns over but won't fire. It did this a couple of times in the past, drove to a place, then won't restart, had to wait half an hour then it restarted. I did change the oil a week ago, suddenly after a week or so of driving with the new oil it started doing this thing.
Yesterday I had to a go to a nearby place near my village, i had my mom drop me off and she drove back, leaving the car out as we were waiting for delivery, the evening we went starting it to put it back in, and of course it wuldn't start. My neighbour was nearby, and told me, get a rag and some petrol, he unlatched the air intake and placed the rag with petrol on the air intake, the car started! He is of course by far no mechanic at all, he told me, probably the injectors could be at fault.
Now, before I start disassembling these, as I read on haynes manual of the car, there are those sealing washers to replace if I remove one to check, is that really likely injectors could be at a fault. I live far from the city so going there I need to be kinda-sure what it is that needs buying.
Note: the oil seems kinda too fluid compared to when I put said oil in. I suspect diesel contamination??

Thank you in advance.

If the oil level going up? The high pressure pump can leak and it finds its way into the sump - but if there is a decent amount of leakage, the oil level will rise. Similarly I also believe faulty injectors will leak into the cylinders which may find its way past the rings into the sump.

I do not know if you need to replace washers if you remove and inspect the injectors - hopefully someone will be along with more info.

Often advice on here is to put injector cleaner fluid into you fuel tank and a few tanks fulls through the system can clear injectors. There is also a very good write up on here about reconditioning the injectors yourself if they are faulty (clogged?).

It has been reported a few times on here where TD4s start when cold but not when hot - I can't recall what the solutions were, you could try doing a search to see what you find.

Good luck.

where TD4s start when cold but not when hot - I can't recall what the solutions were,

Click to expand...

that's often the camshaft sensor at fault ..
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Hello, I did some diagnosing today. car started, even a few times in a row after being idlinga bit. I hear some sort of hissing on the engine compartment, but i cannot see any water oil or fuel leaks.when the accelerator is pressed rpm are fine, but white smoke is produced. Then looking under the bonnet, i noticed something odd. Bubbles come up into the water tank. Never seen this before