What controls the injectors on a TBI?
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. To control fuel pressure, the fuel pressure regulator routes excess fuel back to the fuel tank.
What causes no power to fuel injectors?
No power to the fuel injectors can be caused by a few things. If the relays, fuses, and computer all check out then I would move on to looking at the engine management and fuel system. A no start condition can also be caused by a faulty fuel pump, or any of the associated components.
How can you tell if your throttle body is bad?
What Are The Symptoms and Signs Of a Failing Throttle Position Sensor?
- Lack Of Power. If your engine isn’t getting the fuel it needs, or is getting too much, you’ll notice that it doesn’t seem to be accelerating as it should be.
- Trouble Accelerating.
- Uneven Idle.
- Check Engine Light.
What’s the difference between TBI and EFI?
just to clarify, TBI is EFI. efi stands for electronic fuel injection, which TBI most definantly is. most TBI trucks even had an EFI badge on the tailgate…. basically the difference between TBI and other injection methods comes down to placement and number/size of the injectors, as well as firing method/timing.
What happens if an injector fails?
Engine performance is significantly affected when fuel injectors fail. As the engine misfires, the engine can quickly overheat and pre-ignite the fuel mixture. A damaged fuel injector will not only causes issues with driving, but the effects will persist even as the engine idles.
Why does my car crank but wont start?
When your engine cranks but won’t start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression. The most common causes are problems in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter).