Should I repair my car or buy a new one?
The economy being what it is today people have to think twice before buying a new car. The most expensive repairs are transmission rebuild, engine rebuild and major body damage if these three are good then you can fix other repairs.
Major oil and coolant leaks need to be looked at. The color of the exhaust smoke will also reveal if any major engine defects exist. White smoke with a sweet odor is usually coolant mixing with exhaust gases, blue smoke is an indication of oil burning due to valve seals, valve guide, piston rings, black smoke indicates excess fuel due to bad injectors or a defective fuel pressure regulator.