Re: Spark Plug Colour
Posted: Thu May 04, 2023 5:53 am
Further follow up.
Used a synchroniser to balance the carbs and mucked around with the idle screws but still very rich when adding a bit of throttle.
Changed back to the 14.5mm pumps and that resolved the problem. Seems as if you get extra punch from the longer stroke accelerator pump but at the expense of a whole lot of unburnt fuel. I had quite a plume of smoke coming from the exhaust which has now been eliminated by going smaller.
Last thing is to keep working with the idle srews and idle speed to get a smooth idle. If that does not work I will try some of Keith Franck's idle jets.
Used a synchroniser to balance the carbs and mucked around with the idle screws but still very rich when adding a bit of throttle.
Changed back to the 14.5mm pumps and that resolved the problem. Seems as if you get extra punch from the longer stroke accelerator pump but at the expense of a whole lot of unburnt fuel. I had quite a plume of smoke coming from the exhaust which has now been eliminated by going smaller.
Last thing is to keep working with the idle srews and idle speed to get a smooth idle. If that does not work I will try some of Keith Franck's idle jets.