Due to today's fuel and the different engine designs, the level of carbon deposits will differ from engine to engine. Some engines are prone to building up large deposits on the back of the intake valves while others are not. Almost all high mileage vehicles will have some carbon deposits. Symptoms can be anything from
cranking times, drops in fuel mileage, and – in the worst cases – performance problems.
The best way to prevent carbon deposits from becoming an engine performance issue is to use a quality fuel additive on a regular basis starting when the car is new. For the engines that have not been treated and have higher mileage, Powers Automotive
Services Inc
can perform a
decarbonizing
process that has provided us with good results.
How do you know if your engine is suffering from carbon deposit buildup? Without actually disassembling components of the engine to gain visual access and inspect, it's difficult to say what level your engine is at.
We recommend that higher mileage engines have the decarbonizing
process done as routine maintenance every 40,000 miles. We also recommend that the engine control system and the ignition systems be tested to verify that no other issues need to be addressed before the decarbonizing
process is done.
Wondering about the result? The removal of carbon buildup from the valves and intake plenums will restore engine performance. This may result in smoother idle, more power at lower RPMs, and an increase in fuel mileage. Some performance gains will be very noticeable and will vary on
the degree of carbon buildup that was removed.