* Engine misfires or runs rough
* Engine hesitates or stalls
* Engine lacks power
* Reduced fuel efficiency
* Check Engine Light is on
* Black smoke from the exhaust
* Strong fuel smell
How to test a fuel injector:
1. Check the fuel pressure. The fuel pressure should be within the manufacturer's specifications. If the fuel pressure is too low, the fuel injectors may not be getting enough fuel to properly atomize it.
2. Listen for a ticking noise. A ticking noise from the fuel injectors is a sign that they are clogged or dirty.
3. Look for leaks. If there are any leaks around the fuel injectors, they will need to be replaced.
4. Use a multimeter to test the fuel injectors. A multimeter can be used to test the electrical resistance of the fuel injectors. The resistance should be within the manufacturer's specifications.
If you suspect that one or more of your fuel injectors are bad, it is important to have them tested and replaced as soon as possible. Bad fuel injectors can cause a number of problems, including engine damage.
