Hi fellas,
I have been playing around with the tune of my car as at times the idle will set high for 10 seconds or so then settle to 1000rpm.
All the engine work was done by another owner so I don't know the exact cam specs but it has more lump at idle than a 35/75
I have put new spark plugs in it and had a look at the timing with a light.
It also has an electronic dizzy.
I have tried it at 6 and 10 degrees but it doesn't make a difference to the idle issue and actually idles rougher and seems to be struggling.
When I first put the light on it the timing was below the markings on the engine so I'd say around 15 or 16 degrees.
What is a good timing starting point for a large cam?
I don't know if the dizzy has been re-graphed, but does that make a difference at idle?
I have also ordered a vacuum gauge so I can check the balance of the carbs but it is due to arrive later this week so I can check them yet.