94 Sable 3.8 126k miles. It began with a cranking over but no start. Spray a little starting fluid in and it starts. Let it idle 30 seconds and I can shut it off and it starts just fine. Here is what I have done so far-plugs-wires-cap-rotor-fuel filter -IAC. A mechanic friend of mine suggested that it may be leaking injectors and when it sits overnight it floods the cylinders and quenches the spark. So with a 1/4 tank last night I put in a full bottle of Slick 50 high mileage cleaner to give the injectors a concentrated cleaning. I drove the car about 15 miles at 60 to 80 mph and parked it. I went out about 3 hours later and it started just fine. This morning after sitting all night it would not start. A little staring fluid and it fired right up. Now this car only gets driven maybe 40 miles a week. If I need new injectors the cheapest I have found are rebuilt ones for $35 each. Are rebuilt s any good?