Where does throttle body fuel injection take place?
In the early days of fuel injection, automakers developed throttle-body fuel injection (TBI) as a cheap way to switch over to fuel injection. TBI mounts the injector (s) right in the throttle body.
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.
How does fuel injection work in a car?
Fuel injection (usually*) uses an electric pump to squirt fuel into the engine. The engine control unit (ECU) gets data regarding the airflow into the engine and tells the electric injector (s) exactly how much fuel to squirt in. Physics, as applied in the carburetor, is out of a job; if you unplug the fuel-injection system, the engine won’t run.
What causes a vacuum leak in a fuel injection system?
Vacuum leaks are the leading cause of installation issues with your fuel injection system. Check all sources of potential vacuum leaks including components not related to the fuel injection system. There are instances where the vacuum leak is coming from the adapter plate used to attach the throttle body to the manifold.
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.
How many GMC trucks have throttle body injection?
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Why do we need throttle body fuel injection?
It’s a single compact unit that mounts atop the intake manifold in pretty much the same way as a carburetor — hence the appeal to automakers. With TBI, few parts of the engine need to be redesigned, and they deliver most of the consumer benefits of fuel injection (easier starting, smoother running and no need for routine adjustment).
Where is the fuel pump on a GM Truck?
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. And although GM did not include a Schrader valve to which you could connect a fuel pressure gauge, it can be tested with one to find out if the fuel