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Toyota LandCruiser: duel fuel engine troubles

A member of my family has a 100 Series LandCruiser running on dual-fuel. It has never run well and recently he had the LPG system looked at and "fixed". After about two weeks running on LPG the engine stopped with a loud bang, and on removing the sump the remains of a piston and con rod were discovered. Do you think there could be a link between using LPG and the engine destroying itself?

It’s hard to say. If the piston was holed or melted because of an issue with the mixture and the piston failure caused the engine to seize it could possibly be blamed on the LPG, but it’s unlikely that the LPG caused the problem.

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