1 pointIn my experience that's normal for a PI TR6, but often worrisome for people used to modern cars.
1 pointGareth quoted a post from August this year, but I suppose he was repying to "El Condor" (!). EC, how do you know that 4 & 3 are not working? As above, after installing new, careful checking that the right leads to right cylcinders (3 & 4 next to each other). John