How to test the fuel injectors in a Toyota?
Start the engine and let it idle. Let it idle for at least 3 to 5 minutes before you start the next step. Unplug the #1 fuel injector’s connector and see if it has a negative effect on the engine’s idle. By negative effect I mean that the engine’s idle gets rougher/worse.
What does the E2 circuit on a Toyota do?
Toyota EFI systems use a redundant ground system which significantly reduces the chance of ground problems; however, this circuit should never be overlooked when troubleshooting ECU related systems. The E2 circuit serves as a signal return or sensor ground.
What does misfire code mean on Toyota 1.8L?
Since your 1.8L Toyota vehicle is OBD II equipped, you’ll usually see a misfire code (P0300, P0301, P0302, P0303, P0304) lighting up the check engine light on your instrument cluster. So, what causes a fuel injector to go bad?
What kind of ground does a Toyota EFI use?
No electrical circuit will function normally without a dependable ground. Toyota EFI systems use a redundant ground system which significantly reduces the chance of ground problems; however, this circuit should never be overlooked when troubleshooting ECU related systems. The E2 circuit serves as a signal return or sensor ground.
What happens when fuel injectors stop injecting?
So, when one of the fuel injectors stops injecting fuel… whichever cylinder that fuel injector belongs to will go ‘dead‘. A ‘dead’ cylinder will cause a misfire and you’ll see one or more of the following: Engine will have a rough idle. Engine will misfire under load, especially when you accelerate your Toyota.
What to do if your fuel injector is dirty?
The best way to deal with this is to take the injector out of the engine and clean it professionally. You consider a fuel injector dirty when the additives and the hydrocarbons, which all constitute today’s fuels, together with carbon and engine gunk, results in restriction in the injectors.
What causes a fuel injector to start leaking?
Fuel leak – Old age or damage can cause your fuel injector to crack or break, which may make it start leaking gasoline. In explanation, the fuel will no longer be able to get to the nozzle, but rather, it will be leaking from the body.