How does the fuel pump injector system work?
Fuel hoses, the function is to drain fuel from the tank to the injector. The injector is used to remove fuel into the intake in the form of spray The system controller, adjusts when and how long the injector opens. When we start the engine, the fuel pump will work so that the pressure fuel in the fuel hoses increases.
How to repair a GMC Vortec fuel injector?
1. Heat the hose like you did before. Heating only the very end will help you keep from kinking. 2. Slowly press the poppet back in, don’t rush it. 3. let it fully cool and give it a few good tugs to make sure it set.
What does 0 psi mean on fuel gauge?
CASE 2: The fuel pressure gauge’s needle DID drop down to 0 PSI immediately after the Key was turned to the Off position: This tells you that there is something leaking inside the plenum. More than likely, it’ll be the fuel pressure regulator, to make sure go to: TEST 2.
What are the parts of a fuel injection system?
Fuel injection system is a mechatronic circuits that combine mechanical and electronic circuits to achieve a common goal, that is to supply fuel to the intake manifold with ideal volume. There are two groups in the fuel injection system, namely fuel lines group (mechanical parts) and controller group (electronic parts).
Where is the fuel pressure regulator on a 1999 suburban?
Walk over to the passenger’s side of the truck. Face the engine so that you are looking toward the driver’s side. Peer across the top of your Suburban’s engine. From the top, center of the engine, less than one foot down on each side, you should see two metal tubes.
CASE 2: The fuel pressure gauge’s needle DID drop down to 0 PSI immediately after the Key was turned to the Off position: This tells you that there is something leaking inside the plenum. More than likely, it’ll be the fuel pressure regulator, to make sure go to: TEST 2.
What should the fuel pressure be on a GM 4.3L?
This is where you’ll connect your fuel pressure gauge (the first photo, in the image viewer, is of a 4.3L, and the second of the V8 engine). NOTE: In case you’re wondering, the factory manual specifies that the fuel pressure for the CSFI system should be between 56-62 PSI. The CPI system’s fuel pressure should be between 60-66 PSI.
What happens when the fuel injector starts leaking?
So, when the fuel pressure regulator (or a fuel injector) is leaking, the fuel pressure will drop down to 0 PSI as soon as you turn the engine off (and if this happens, then you know that you have a problem). Therefore, very first thing you need to do is a fuel pressure leak down test with a fuel pressure gauge.