How can you tell if you got a bad injector?

Here are a few signs there might be something wrong with your fuel injectors.

  1. The Engine Misfires. Dirty fuel injectors may cause your vehicle’s engine to misfire.
  2. Idling Gets Rough.
  3. Your Gas Mileage Tanks.
  4. The RPM Needle Starts to Dance.
  5. Your Car Won’t Start.

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. The injectors spray fuel into the throttle body bore, right above the throttle plates.

What causes no injector pulse?

What is this? In case of that, there is no injector pulse or spark, which means that if your ECU has failed in operating in this case you have to get your ECU changed or visit an expert.

Can you change a TBI to a carb?

The most basic things you’ll need to convert from TBI to a carburetor is a carb and a matching manifold. You could try to track down a used stock manifold, but aftermarket aluminum manifolds like the Performer RPM make more power, are lighter and will only run you about $60.

How to test your TBI injectors?

First,hook the test-light clip to a bolt or bare metal bracket on the engine.

  • Unplug the electrical connector from the fuel injector you want to test.
  • Turn the ignition switch to the ON position.
  • Touch the terminals (one at a time) of the harness connector with the test light.
  • How to clean a TBI injector?

    Replacing fuel filter. Replace your fuel filter and run a fuel system cleaner,like the Lucas Fuel Treatment+Water Remover through your fuel tank.

  • Remove air cleaner. Remove or flip up the air cleaner to access the throttle body underneath.
  • Disconnecting the battery.
  • Cleaning throttle body area.
  • Cleaning injectors with throttle body cleaner.
  • How can I tell if an injector is bad?

    Common Bad Fuel Injector Symptoms or Signs of Bad Fuel Injector. We have seen several symptoms that are indications of bad fuel injectors.

  • Clogged Fuel Injector Symptoms. It may not be that easy to diagnose a clogged fuel injector as they are similar to bad coil,bad spark plug,or broken spark plug.
  • Dirty Fuel Injector Symptoms.
  • Leaking Fuel Injector.
  • How do you rebuild GM TBI injector?

    Change your fuel filter,and run a fuel system cleaner through your fuel tank.

  • Remove the air cleaner to expose the throttle body itself. Disconnect the negative battery terminal.
  • Open the butterfly of the throttle body,and spray the entire area thoroughly with throttle body cleaner.