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Symptoms of a Bad or Failing Fuel Injector
Common signs include an odor of fuel in the car, engine performance issues, and the Check Engine Light coming on.
Symptoms of a Bad or Failing Cold Start Injector
Common signs include hard starting, a decrease in fuel efficiency, and engine performance issues.
Symptoms of a Bad or Failing Injector Control Pressure Sensor
Common signs include starting issues, engine misfires, the Check Engine Light coming on, and a decrease in power, acceleration, and fuel economy.
How to Ensure Fuel Injectors Are Receiving the Correct Voltage
Faulty fuel injectors affects fuel economy and can cause a misfire. Make sure your fuel injector receives enough power to work properly.
How to Replace a Fuel Injector
Fuel injectors are faulty if the smell of fuel is present in the vehicle, you have engine performance issues, or the check engine light comes on.
How to Flush a Fuel Injector
Clean fuel injectors help keep your engine running smoothly and efficiently. Clogged fuel injectors result in reduced fuel economy and loss of power.
How to Replace a Cold Start Injector
The cold start valve fails when there is leakage coming from the fuel line. The cold start injector may have failed if the vehicle does not start.

Related questions

2500 RPM idle on cold start. Is this normal? If not, then is it due to a cold start injector?
A higher than normal idle can be due to a stuck open idle control valve or a vacuum leak in the intake when the engine is cold. You may have a bad cold start injector system. I would recommend having...
What are the effects or symptoms of bad fuel injectors?
Hello. A bad fuel injector can fail closed, fail open or not seal when closed and can work normal but have reduced flow from blockage. A fuel injector that is failed closed will cause total misfire all the time on...
Engine misfire - 2005 Chrysler 300
Code P0300 relates to a random cylinder misfiring which can be caused by many different issues such as the following: Faulty spark plug (s) Faulty ignition coil (s) Clogged or faulty fuel injector (s) Intake air leak...
My Dodge Neon is misfiring on cylinder #4. The Check Engine Light is on, code is P0304.
A misfire can can also be caused by a vacuum leak, a wiring problem, a faulty fuel injector, a bad electrical connector, or any number of other causes. It would be best to pull the codes that are causing the...
I just need to know how long it will take to replace a fuel injection throttle body
Hey there. The labor to replace the throttle body and relearn the idle calls for 1.5 hours labor. This does not include any other work or diagnosis time that may be needed to complete repairs.
If a fuel filter is plugging up can that restrict the fuel pressure in a fuel injected car
Hey there. Since the fuel filter is an in line filter that the fuel must flow through in order to get to the injectors, this can have an impact on fuel pressure. Depending on how plugged the fuel filter is,...
Fuel injection issue - 2005 Buick LaCrosse
Hi there. Your vehicle has a sequential fuel injection system. When the computer detects a fault, it converts to port fuel injection (bank to bank/limp mode). The most likely cause could be an electrical short in the odd bank of...
Sounds like you have a clogged fuel filter or dirty injector ports. You may want to try putting a can of Seafoam in your gas tank and see if this will help clean your fuel system out. If you still...
About injectors
Hello. You may have a hard start in the morning worse than when the engine is warm. You may have hesitations from a stop on take off. You may get a lean surge when cruising down the highway. You may...
hi i have a fiat sienna that has no pulse on the injectors from the ground in the ECU. the car has spark on the plugs and the pump
Hi there. No injector pulse, more than likely, is a faulty ECM. There are steps you can take to confirm the problem. Accessing the ECM (electronic control module) for codes may help direct you towards the area of fault. Having...
My car reduced speed and increase at the same time even on the motion
Hi there. The description you have given, appears to be a fuel starvation issue. Surging and bucking upon acceleration could be a fuel pump problem. Not knowing what year your Toyota is, it may have an external fuel filter that...
Car turns off while driving normally on the highway
Hello there. You have a few different problems going on with your 2006 Volkswagen Golf. The injector open circuit code indicates that that the fuel injectors are not receiving the power they need to function. The camshaft code could be...
Chevy K1500 will not produce spark. I have replaced everything in the ignition system.
Check the spark plug wires and spark plugs. If the plugs have fuel on them, then they are not igniting and need replaced. If the spark plugs are working fine and the wires have good resistance, then put a compression...
I had #3 fuel injector to go out in my car. It was replaced and within a week the light came back on with same problem.
Hi, thanks for writing in. If it is only the #3 injector both times, more than likely there is a short in the engine wiring harness or possible the PCM. First thought was that maybe there is a lot of...
Excessive engine crank before firing up.
Hey there, thanks for writing in about your 2003 Chevrolet Silverado 1500. This is likely a fuel pressure issue causing fuel to not reach the injectors quickly enough when cranking. If you decide to get this fixed, I would recommend...
car turns over sounds like wants to start but wont
This issue may be caused by a dirty throttle body, fuel injectors, or the fuel filter. If you still need help, YourMechanic can dispatch out a professional mechanic to your home or place of business to diagnose and replace anything...
Bank 1 running to rich and injector 1 contribution fault Intermittent.
Hi and thanks for contacting YourMechanic. What you are experiencing is a misfire detected in cylinder 1 and a random misfire in cylinder 3. This could be caused by either the fuel injectors not firing, the spark plugs fouling out,...
Can anyone tell me if the half moon metal part inside of the distributor, that the cam sensor reads off of, is supposed to have an
Hello. Although you have done considerable work on the fuel system, it may be a good idea to check the fuel pressure coming from the fuel rail. This will determine if the fuel pressure regulator is working efficiently, which may...
Runs fine with the map sensor vacuum line plugged off
Hello, the map sensor is an input of engine load. When the map sensor is disconnected it will set a fault code which is emission base and check engine will come on,this cause the system to go into a default...
Car cut off file injectors miss fire after driving 46mi.
Hi there. You will want to start by testing the fuel injector that has tested bad. This can be done using a multimeter. If the resistance of the injector is out of specifications, you will want to replace it. If...

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