frenchie wrote:
go on the web and google four seconds flat go to read your spark plug that will give all your timing and a/f ratio it takes awhile to get your head around it but it works cheers
Thanks Ken, I had a read and it is very good information.
My problem is where I live, it isn't easy for me to get the car out on a road where I can cruise at speed, stop to check the plugs and make adjustments and repeat until it is right.
I have read good reviews on the UK sites about Colourtune but am having difficulty getting one, apparently the supply chains are the problem. If I can borrow one I can also see whether they are as good as others say.