I have a 1989 Chevy S-15 with the big V-6. It has 150,000 miles on it and a new alt, water pump, thermostat and NEW ignition system : plugs, wires, cap, rotor, coil. It runs but I have a skip in it and I have a feeling its a head. No oil in the water or water in the oil but some coming out the tail pipe or at least I think its water, could be condensation. The rest of the car is in GREAT condition.