Hi ive a 1990 1.6 eurpean bluebird, its got 200,000 miles on it, and still going strong, except the head gasket started to leak, but im wondering why on the head itself it has 8 spark plugs, i was told that it was built for a twin coil, but there is only a single one on it, im wondering if its ok if i can buy a second hand twin coil for it and stick it in, and whats the purpose for a twin coil.
thanks
john