Table of Contents
What tells you to open injectors?
The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.
What voltage do fuel injectors use?
12 volts
Most injectors use 12 volts to energize the coil, and the driver energizes the circuit by pulling it to ground. When the injector is energized, the voltage drops to almost zero. If it does not, it could mean an open or weak connection in the wiring harness or open coils inside the injector.
How does a flow test check your injectors?
Ohm testing: A simple test to verify the condition of the injector coil, we test the resistance (measured in Ohms) across the terminals of the injector connector. Spray pattern verification: During the flow test, our techs evaluate the spray pattern of your injectors.
Where is the Maxi injector on a Chevy truck?
The MAXI injector is mounted in the center of the intake manifold on the 4.3L engine, and is hidden inside the split plenum manifold. Instead of spraying fuel directly into the manifold like a throttle-body injector, the MAXI injector routes fuel into six nylon fuel lines that have poppet-style spray nozzles on the end.
How does the fuel injector work on a Chevy truck?
Instead of spraying fuel directly into the manifold like a throttle-body injector, the MAXI injector routes fuel into six nylon fuel lines that have poppet-style spray nozzles on the end. When the pressure inside the lines reaches the opening pressure of the poppet valves (43 psi), fuel sprays out of the nozzles into the engine’s intake ports.
How can I tell if my fuel injector is bad?
Listening for Bad Fuel Injectors Put on the appropriate safety gear. Open the hood and locate your fuel injectors. Find a long metal rod or screwdriver. Place the tip of the rod on a fuel injector. Bring your ear close to the rod and listen for clicking. Repeat these steps for each injector.
Can a fuel injector assembly be replaced individually?
In the CSFI system, all parts can be replaced individually. The cool thing is that you don’t have to crack anything open to find out if anything is leaking inside, you can do a simple fuel pressure leak down test and based on the results of this test, you’ll know if something is wrong with the ‘Spider’ fuel injector assembly (of either type).