A 340 with single point normally aspirated LPG. Been brilliant for economy for a number of reasons - more range per fill, half the cost of petrol and less need to change engine oil (hardly bother now). But we have been bugged by poor idle - sometimes cutting out when decelerating. That isn't entirely sorted but the lack of power issues were seen to by using smaller gap plugs - 0.7mm as you suggested. This has improved fuel economy too - as there is a better burn, there is more power so less need to put the throttle down so far.
So your suggestion was a win all round. Thank you again.
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"The more people I meet the more I like my God."
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