2.8 Hilux diesel problem

Hi all

When the engine is at full thottle for a little while it starts to miss\loose power\blow smoke. Often if you throttle off the engine dies, but slowly lowering revs it stays running.

I have replaced air filter\fuel filter etc.

I noticed some diesel being sprayed from one of the injector nuts, so tightened and prob went away.

Prob back again and all pipes from pump tight and nut under pipe tight.

Can I put a thread sealer on these items to seal the pressure and stop and movement?

Is there a chance a leak comes from somewhere else on these that is easy to fix.

I think it looses pressure in the fuel delivery side of things that causes it to gasp?

Anyone with same prob or ideas to fix will be much appreciated.

Stu
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