Fuel System Service
Today’s fuel injected vehicles rely on a clean source of fuel more
than ever before. Some low cost fuel stations don’t have the
cleaning agents added to their fuel that the major fuel stations
do. Dirty fuel injectors can really cause some problems like
reduced fuel economy, hesitation, rough idle, a hard start, sticky
throttle, and failed emissions among other problems. Your fuel
system needs to be maintained in order to keep system pressure at
proper operating levels, fuel filters should be changed regularly,
and fuel injectors should be professionally cleaned if any of these
symptoms should occur. Our fuel injection cleaning service includes
cleaning deposits from fuel injectors, cleaning carbon deposits on
the backs of the intake valves and the combustion chamber, as well
as cleaning the air intake passages in the air intake throttle
body. This is achieved by disconnecting the vehicles fuel supply
system and running the vehicle on a machine with a special cleaning
agent for about an hour. This service really helps to insure that
none of these prior symptoms may occur.
The fuel system provides the fuel necessary for the engine to operate.
In years past, a mechanical fuel pump and carburetor were used. In order for engines to run better and produce less
harmful emissions, electronic fuel injection systems have taken their place. On modern vehicles, fuel is supplied by
an electric pump and metered to the cylinders by computer controlled fuel injectors.
The fuel tank stores the fuel. Inside the tank, there is a float that signals the computer systems and/or fuel gauge
as to how much fuel is in the tank. On newer vehicles, the fuel pump, fuel, filter, and fuel pressure regulator may
also be housed inside the fuel tank.
The fuel injector is a nozzle-and-valve assembly that sprays a precise amount of fuel from the pressurized fuel system
into the engine to aid in the combustion process.
What benefit will I get out of a fuel system cleaning?
Obviously, the dirtier your fuel system is, the bigger the improvement you will see in performance and fuel economy
after a fuel system cleaning. But it is important not to wait until your system is running poorly. If you do, by the
time you get a cleaning, you’ve wasted hundreds of dollars in gas or even possibly damaged your fuel injectors and
Gasoline is a petroleum-based product and will leave some residue, gum and varnish along the way. Some of that can
find its way into your fuel injectors and interfere with their job. The fuel injectors do just what their name
suggests- inject fuel into your engine. They spray a precise amount of fuel, at a precise time, in a precise pattern,
at a precise pressure. This process is very calculated and when your fuel injectors are dirty, it just isn’t possible.
In turn, your engine can run rough. Also carbon deposits build up on valves and in the combustion chamber. Fuel
economy suffers and performance is degraded over time.
These poor conditions allow excess unburned fuel to pass through the exhaust to accumulate in the catalytic converter.
This can lead to overheating and failing. So the main issues while having a dirty fuel system are: bad fuel economy,
poor engine performance and the chance of having to replace expensive parts such as the fuel injectors and catalytic
A professional fuel system cleaning cleans out deposits, fuel injectors and the air induction system. This will give
you optimum power! This is, of course, ONLY for professional cleanings. This isn’t just pouring a bottle of gas in the
tank. Cleaner is added to the fuel system with a special tool attached to a vacuum source as well as some manual
If you are experiencing a rough idle or unusually poor fuel economy, talk to a Xpertech service advisor and ask if a
professional fuel system cleaning is in order!
The fuel filter removes contaminants from the fuel, which helps prevent damage to the fuel system components.
Symptoms of a Bad or Failing Fuel Filter
• Engine may run lean
• Check Engine Light may illuminate
• Lack of engine power
• Fuel leak
Fuel Filter Related Repair Advice
• Many manufacturers don't specify a replacement interval, but it's
wise to replace the fuel filter every 30,000 miles
• We recommend using high-quality fuel filters to keep contaminants
out of the fuel system
• Infrequent fuel filter changes can lead to potentially expensive
problems with the fuel pump and/or injectors
• When replacing a fuel filter, the shop should also replace any
associated washers or seals to prevent leaks in the fuel system
• Many newer vehicles have only an in-tank filter, which is not
serviced during routine maintenance