Quoted £77 for a set of HT Leads from GSF, thought it was a bit steep, anyone know of anywhere else or online any cheaper? Tried ebay with no success
I saw a survey somewhere and it concluded that 40% of problems with cars were owner induced.
My leads are still original at close to 170,000 miles.
The resistive connections attached to leads often go faulty (well on my generation of Merc anyway) but the actual leads will last and last.
AS mentioned previously, wipe the muck off them and make sure they are dry.
If you leave the covers off and start the car in the dark you will be able to check for erroneous sparking around the leads coils etc. There should be none.