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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.
What Causes Fuel Injectors to Get Clogged or Dirty?
Fuel injectors deliver fuel into the cylinder for combustion. Clogged fuel injectors can be caused by debris or impurities in the fuel.
How to Replace Fuel Injector O-Rings
Fuel injector o-rings prevent fuel vapors from entering the car engine. O-rings for fuel injectors hold up to 750 psi and keep fuel from igniting.
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 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 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.
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.
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.

Related questions

Question
What is going on with my car?
Hi there. Check the fuel injectors and see if they are working or not. If the fuel injectors are not working, then you would need to replace the fuel injectors. If the fuel injectors are fine and the engine operates...
Question
Problems with fuel system
Hi, in this case it could be any of these things that you've mentioned. I would start at checking the battery for proper voltage. If voltage is correct then I would check the fuel pump and relay. If there is...
Question
My car idles rough when stopped
This may be a sign of a leaky injector or potentially an incorrect idle air adjustment. A leaky injector can cause a rich fuel condition as it may leak too much fuel into a cylinder not allowing the combustion cycle...
Question
Misfire on cylinder 8
It could be the spark plug, ignition coil, or coil boot causing the misfire. You may also have dirty fuel injectors that need to be cleaned. Have the ECM scanned to see if the misfire code is P0308. This code...
Question
im having trouble starting my car
If you feel like the vehicle is flooded, try smelling the tailpipe for gas fumes after trying to start the vehicle. You can also try putting the vehicle in "clear flood mode", or "clear out mode" by holding the gas...
Question
Fuel injectors misfiring
Hello. If you are getting codes for the injectors themselves then they may be electrically failing and in need of replacement. I would typically check their resistance with an ohm meter to verify if they are bad, as a bad...
Question
Fuel
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...
Question
Cylinder 2 misfire
You need to pull out the coil and check to see if there is oil in the spark plug hole, or on the plug wire boot. If there is, then replace the valve cover and spark plug boots after cleaning...
Question
Car turns over but won't start.
I think that the ignition coil is a very likely cause of this issue. Since the spark plugs do not have their own individual coils, if the main ignition coil fails, it could affect all cylinders' ability to spark. ...
Question
Car cutting off while driving
This could be a fuel delivery issue, but it is hard to say exactly. Your vehicle has a complex engine control system that can self diagnose issues most of the time. Start by having the computer read and see if...
Question
Can the nozzles of a v4 Honda accord 2008 be serviced? If yes, can it be serviced by using a battery
You can service the injectors on the car with an injector machine only and not a direct battery connection or injectors will be damaged. They are designed to only have intermittent power and ground at the same time and not...
Question
Bus not starting
Hey there. This may be caused by a few different things which all seem to indicate you have a fuel supply problem. This may be caused by low fuel pressure, dirty or faulty fuel injectors, low voltage to the fuel...
Question
Could a bad fuel injector be making my 2007 Pontiac Grand Prix smell like gas?
It's possible that a leaking injector or injector o-ring could be making your Pontiac smell like gas. These items could also cause driveability issues, such as the ones you describe.There are other potential causes as well though, such as a...
Question
White smoke ticking not overheating
If you have white smoke out of the exhaust and are not getting low on coolant then you may have a cylinder that is low on compression or not firing. Have the misfiring cylinder compression checked on that side of...
Question
1976 fuel injected cadillac seville :initial start hesitates,cuts off than starts back up and runs fine after that.
If the fuel injectors have never been serviced, that would be a good start on a car of this age. To do it right the injectors have to be removed from the fuel rail and sent out for cleaning to...
Question
I have a 2007 Suzuki forenza.when I turn the key on fuel sprays from tops of injectors. Any advice?
Leaks from fuel injectors are typically at the o-ring connection on the fuel rail. When you install the injector o-ring, you have to use a liberal amount of engine oil and twist the o-ring in along with the injector. Also,...
Question
One of my fuel injector burned out what's wrong?
If you are referring to the electrical solenoid within the injector, like any electrical part it can fail due to degradation of the insulation, wire breaks and so forth. The injector can be tested while still on the car and...
Question
What causes fuel injector fuse to blow in a 2007 Cobalt?
Yes, you are absolutely on the right track but to complete the diagnostic job you will need the complete circuit diagram (Factory Service Manual, for instance) because you will have to test all the different segments of the circuit until...
Question
I have a 97 jeep Cherokee thats has been running rough. It smells like gas when I drive for awhile and then this morning after dri
From your description, the cylinders are being oversupplied with fuel. If the fuel trims (from a scanner) are high negative, for sure there is too much fuel and a diagnostic would be required to determine why. Just as an example,...

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