Quote:
Originally Posted by Joe Harding
Do an LPG conversion. All the stuff about blocked jets stops being an issue. Lovely engine bay pics, all those lovely parts to salivate over...
It sounds to me like an air leak at idle. Usual symptoms are fine running at speed when the quantity of extra air won’t make a difference but at idle it significantly weakens the mix. A place worth checking is the brake servo. It draws its vacuum from the manifold and any leaks in the diaphragm will dilute the mixture. A simple test is to block off the pipe and see if matters improve.
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I did quite a few LPG conversions on 300's in the 80's Very successful , I still have the parts in the attic with the torpedo tank , as they were removed when it became uneconomic in the 90's , it would be transformed these days with electronic control and a low pressure turbocharger ...