06-06-2023, 09:39 PM
Hi Adrian, Simon etc,
The followers were all checked whilst the valves were out so I think it is unlikely now. I am beginning to think the original "single misfire at speed" was a separate issue (possibly the gummed up valve stem causing it to stick) and that the current problem is due to weak mixture.
I need the car for work tomorrow but I'll check the pump valves and diaphragm at the weekend. If it's not that then it has been suggested that a worn butterfly spindle may be the cause. My spare carb is a bit of an unknown quantity but it may be a useful comparison.
I'll keep you all posted, your collective wisdom is much appreciated.
The followers were all checked whilst the valves were out so I think it is unlikely now. I am beginning to think the original "single misfire at speed" was a separate issue (possibly the gummed up valve stem causing it to stick) and that the current problem is due to weak mixture.
I need the car for work tomorrow but I'll check the pump valves and diaphragm at the weekend. If it's not that then it has been suggested that a worn butterfly spindle may be the cause. My spare carb is a bit of an unknown quantity but it may be a useful comparison.
I'll keep you all posted, your collective wisdom is much appreciated.