I have a 1994, 4-cylinder Camry that is coming up on 218,000 miles. I’ve babied the car and it is in very good shape, and I do both routine and preventive maintenance. One question I have relates to valve adjustments. The owner’s manual says to do it periodically, but both of the mechanics that I use regularly say that it’s best to leave them alone if they’re not making noise. The motor purrs, and the valves haven’t been touched for more than 100K. Do I keep on trucking or should they be adjusted?
The other question relates to the fuel injectors. They’ve never given me any problem, but I wonder if they’re likely to go bad, given the mileage. Should these be replaced as a preventive measure or, like the valves, are they best left alone if they’re not complaining?
Any and all thoughts appreciated.