Timing Light ESI125

Generally speaking if your ignition timing has been set correctly, these do not require any further attention theoretically unless the distributor has been tampered with. Service schedules do require checking at every 12,000 miles but in my opinion this is excessive as the tranistorised ignition there is no wear adjustments to speak of. In my life of checking these very rarely any adjustments were required.

The distributor having no contact set of points which used to wear out required checking and adjusting on service schedules or replacement of new contact points. The only time you need check timing is if you have any performance issues as although not having points, the rotor arm shaft could wear and affect ignition timing which would affect performance.

So in balance, you need to consider the cost verses usage of this tool. It is not cost effective.

I have not looked into the model you have given but should you still be interested, my choice would be one with timing offset. This allows you to check timing at other speeds than the mandatory idle speed check. Checking the timing at 3,400 rpm with the vacuum off can give indication if there is issue with the spring and weights used to control timing advance or retardation housed in the distributor its self.

I will try to look into this latter.