Purpose of Detergents in Gasoline
While General Motors' fuels engineer Andrew Buczynsky says that no one has identified the exact molecule in gasoline that causes engine buildup, he says that consistent use of Top Tier detergent gasoline will keep engines cleaner. Engine "gunk" typically builds up in fuel injectors and intake valves, causing reduced fuel efficiency, acceleration, and power, as well as increasing emissions, rough idling, and increased motor repairs. When fuel injectors accumulate deposits, they do not distribute fuel evenly, creating pockets of too much fuel and too little fuel. Too-little fuel around the spark plug dampens the combustion that drives the piston downward and may cause a misfire. When the frequency of misfires reaches a certain point, the on board computer turns on the "service engine" light on the dash. The repair for this type of problem depends on the severity of the deposits. In milder cases, a mechanic may solve the problem by simply scraping clean the fuel injectors, or by adding a can of fuel-injector cleaner into the gas tank. However, in some cases, the fuel injectors must be replaced. And if the deposits have formed on the intake valves, a more costly cylinder-head rebuild may be necessary, costing $1000 or more.
Read more about this topic: Top Tier Detergent Gasoline
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