Are jeeps fuel injected?
Though it is almost identical to earlier YJ Wranglers the engine were instead fed with fuel injection. Fuel injection works much the same as a carburetor. Its design is to combine fuel and air and deliver it to the engine.
What kind of fuel injection does a Jeep Cherokee use?
To properly diagnose your system you must check fuel pressure using a fuel pressure guage. Test procedures are intended for RENIX 4.0L engines only. 2.5L engines have THROTTLE BODY INJECTION and HO engines have a different fuel system!
How to troubleshoot a bad fuel injector in a Jeep Wrangler?
TIP 1: The engine in your 4.0L Jeep Cherokee (Grand Cherokee, Wrangler) needs to be at operating temperature to get an accurate snapshot of the condition of the fuel injectors. TIP 2: If your Jeep doesn’t start, you don’t have to worry about performing the test with a warmed up engine.
What should the fuel pressure be on a Jeep Cherokee?
Fuel pressure should be approximately 214 kPa (31 psi). If fuel pressure is not approximately 55-69 kPa (8-10 psi) higher with vacuum line removed from regulator, inspect pressure regulator vacuum line for leaks, kinks or blockage.
How long does it take to test a fuel injector in a jeep?
TIP 2: If your Jeep doesn’t start, you don’t have to worry about performing the test with a warmed up engine. What makes testing the fuel injectors on your Jeep’s 4.0L 6 cylinder engine is that they are in plain view and easy to get to. This makes it possible to check for a bad fuel injector in about 10 to 20 minutes.
To properly diagnose your system you must check fuel pressure using a fuel pressure guage. Test procedures are intended for RENIX 4.0L engines only. 2.5L engines have THROTTLE BODY INJECTION and HO engines have a different fuel system!
TIP 1: The engine in your 4.0L Jeep Cherokee (Grand Cherokee, Wrangler) needs to be at operating temperature to get an accurate snapshot of the condition of the fuel injectors. TIP 2: If your Jeep doesn’t start, you don’t have to worry about performing the test with a warmed up engine.
Fuel pressure should be approximately 214 kPa (31 psi). If fuel pressure is not approximately 55-69 kPa (8-10 psi) higher with vacuum line removed from regulator, inspect pressure regulator vacuum line for leaks, kinks or blockage.
TIP 2: If your Jeep doesn’t start, you don’t have to worry about performing the test with a warmed up engine. What makes testing the fuel injectors on your Jeep’s 4.0L 6 cylinder engine is that they are in plain view and easy to get to. This makes it possible to check for a bad fuel injector in about 10 to 20 minutes.