Can a throttle body fuel injector be inspected?
Photo courtesy of Albertas Agejevas on Flickr. Unlike injectors on throttle body fuel injection (TBI) systems, those used on an Electronic Fuel Injection (EFI) configuration don’t have their fuel spraying accessible for inspection.
Which is the best way to test a fuel injector?
Check your repair manual for further tests, if necessary. You can also test the injector controlling circuit using a noid light. This is the easiest way to test an injector feeding circuit. The noid light connects to the harness of the fuel injector you want to test. You can loan or buy a set of noid lights from your local auto parts store.
How to check the fuel spray on a TBI system injector?
You can visually inspect the fuel spray on TBI system injectors. Fuel flow spray is readily accessible, making it fast to check for potential problems. Remove the cover off the air cleaner housing (where the air filter lives). Ask an assistant to start (or crank the engine, if it doesn’t start). Check the spray pattern coming our of the injector.
What does it mean when your fuel injector is irregular?
A single, solid spray or irregular pattern means the injector needs cleaning, or that an internal part wore out or broke. You can try to fix an irregular fuel spray pattern by adding a quality cleaning fuel system additive to the fuel tank. Or take your car to the service shop and have them clean the system.
How does fuel injector cleaning and service work?
Fuel Injector Services involve inspection of fuel injector and fuel injector components for carbon build up and cleaning with fuel injector cleaner and lubrication. How Should Fuel Injectors Work?
Where can I get my Hyundai fuel injector cleaned?
% Keeping your Fuel Injector cleaned will ensure the high performance and efficiency of your engine. You can schedule your Fuel Injector cleaning or repair at Courtesy Hyundai of Tampa, where you will find a state-of-the-art service department with many amenities to make your service experience even better.
Can a misfire cause a fuel injector to be cleaned?
In most manuals, they will not recommend this type of repair. Keep your ears peeled for the engine clanking, a rough idle, loss of power, or an engine misfire. These can all be signs of a fuel injector that may need to be cleaned. A restriction in fuel by more than 8 percent can often cause an engine to misfire.
What should I do with my fuel injector when I return it?
Dry each injector and then place it in individual plastic bags. If so desired, mark each bag with the cylinder it came from. Placing the injectors in a plastic bag will also prevent gasoline odors coming from your parcel. If required please download the latest copy of Adobe Reader Return shipping United States.
When was throttle body fuel injection phased out?
TBI is a type of fuel injection system that served as a segue between carburation and multiport fuel injection (MPI). Although TBI was phased out of production cars by the mid-90s, many vehicles that employ the technology are still on the road.
Where does the fuel pump go in a throttle body?
The fuel body houses the fuel pressure regulator and one or two fuel injectors. The vehicle’s fuel pump moves fuel from the gas tank to the throttle body assembly. Then a computer, often referred to as the powertrain control module (PCM), activates the TBI injectors.
Where is the throttle cable on a fuel injected engine?
On older vehicles, the throttle body of a fuel injected engine is operated by a throttle cable that is either attached to the gas pedal or to an electronic throttle control. The reason you need to consider this fact first is because electronic throttle bodies are calibrated with incredibly tight clearance on the throttle blades.
Photo courtesy of Albertas Agejevas on Flickr. Unlike injectors on throttle body fuel injection (TBI) systems, those used on an Electronic Fuel Injection (EFI) configuration don’t have their fuel spraying accessible for inspection.
How to tell if you have a fuel injector problem?
1 Engine misfires and decrease in power, acceleration, and fuel efficiency One of the most common symptoms of a potential problem with a fuel injector is engine performance issues. 2 Fuel odor Another common symptom of a potential issue with a fuel injector is a fuel smell. 3 Check Engine Light comes on
On older vehicles, the throttle body of a fuel injected engine is operated by a throttle cable that is either attached to the gas pedal or to an electronic throttle control. The reason you need to consider this fact first is because electronic throttle bodies are calibrated with incredibly tight clearance on the throttle blades.
What to use to clean throttle body injectors?
Wipe up any gasoline spilled on the engine, when attaching the hose to the fitting, to prevent fire. Screw a can of pressurized injector cleaner to the gauge assembly can tap and open the can by turning the thumbscrew all the way into the can then all the way out.
What are the symptoms of a bad fuel pressure regulator?
Another symptom of an issue with the vehicle’s fuel pressure regulator is fuel leaks. If the fuel pressure regulator’s diaphragm, or any of the seals fail, fuel leaks can occur.
Why is my fuel injection system plugged in?
The electric fuel pump installed for a fuel injection system will draw considerable more volume of fuel from your tank than your old system did. If there are any contaminants in the tank this many times will plug up or greatly restrict the flow of fuel to the system causing many issues. Step by Step Troubleshooting guide.
Is there no fuel from injectors to start truck?
No fuel from injectors to start truck. When I try and start my 93 Chevy Cheyenne k3500 no fuel come out of the injectors. If I use starting fluid the truck starts and the injectors work great. Has died a couple times while driving, but mostly runs fine and then won’t start one turned off.
Where is the throttle body fuel pump located?
As you’re already aware, the throttle body fuel injection system on your 1987 to 1995 4.3L, 5.0L, or 5.7L pickup (or SUV) uses a low pressure (12 PSI) electric fuel pump located in the gas tank.
The electric fuel pump installed for a fuel injection system will draw considerable more volume of fuel from your tank than your old system did. If there are any contaminants in the tank this many times will plug up or greatly restrict the flow of fuel to the system causing many issues. Step by Step Troubleshooting guide.
What should fuel pressure be on a TBI fuel injection system?
Fuel Pressure is critical to the operation of a fuel injection system. Always check to insure that you have the proper fuel pressure. Fuel pressure should be a constant 10 – 15 PSI on a TBI fuel injection system and is typically around 12 – 13 psi. Higher pressure than 15 psi indicates that there is an issue with the installation.
Can a bad throttle body cause strange fuel mixture?
If your car feels like it lost half of its power when accelerating, it can absolutely be caused by a bad throttle body. You already know that a bad throttle body will cause a strange fuel mixture.
What should I do if my throttle body is bad?
As a part of your regular service intervals, include the air induction service and fuel injection flush to clean out any carbon deposits and dirt. You will need to have the check engine light shut off by a qualified mechanic.
How does the throttle body work in a car?
The throttle body in a car provides the control of air and fuel injection so that the system runs efficiently and does not backflow. When this automotive part is not working correctly, or its electronic sensors begin firing off readings to the onboard diagnostic computer showing problems, it can create car problems.
You can visually inspect the fuel spray on TBI system injectors. Fuel flow spray is readily accessible, making it fast to check for potential problems. Remove the cover off the air cleaner housing (where the air filter lives). Ask an assistant to start (or crank the engine, if it doesn’t start). Check the spray pattern coming our of the injector.
What to use to clean throttle body injection?
Spray carb cleaner or similar solvent to breakdown the carbon deposits inside the throttle body and flap. Scrub the part with the plastic brush to avoid scratching the sensitive flap. Scrub until thoroughly clean.
What to do if your throttle body is stuck?
Check that the throttle flap is not stuck open. Use a socket wrench and crescent wrench to loosen the bolts holding the throttle body to the engine block. Pull the unit off and disconnect the electronic sensor from the car wiring.