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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.
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.

Related questions

Question
Car Sitting waiting for repair. Sat 9 Months Now repair finished but will not start.
Hi...gasoline has a limited shelf life. After four months or so, but sometimes even earlier, gum and varnish develop. Gasoline that is nine months old will typically not have enough of the volatile fractions (from the refinery process) to start...
Question
m y mechanic put a 5.4 3valve reman into my 2007 lincoln navigator.
Hi there. Check the cylinders that are misfiring for fouled out spark plugs or non working injectors. Look at the spark plugs and see if there is any burn marks or corrosion. If there is no signs of wear on...
Question
My car stalls and my injectors stop spraying 1998 Nissan Sentra
Hello. If your car is stalling and it stops spraying fuel then most of the time this is caused by a failure in the crank position sensor. This is a common issue on this vehicle. When it fails the computer...
Question
tbi injectors
If there is power to the injectors, and they make an audible clicking noise (that is, mechanically the injectors are functioning) measure the fuel system pressure and be sure that the pressure is within Factory Service Manual specifications. If pressure...
Question
My Buick LeSabre 1998 model misfires on cylinder #3.
Hi there. The fuel is warm when the level is low and when the fuel tank is filled up the fuel tends to get cooler than it was before. In general, the fuel is low dense when it is warm...
Question
fuel injectors are not spraying fuel
Be sure that any engine immobilizer system (security system) is not activated, thus preventing the car from starting. Check for the characteristic, but momentary, whirring sound from the in-tank fuel pump at key "on". If no fuel pump operation is...
Question
Flooded engine 1998 Chevrolet K1500
Hi - ouch, these problems make you crazy! Great effort on resolving the "sugar in the tank" recovery. I believe the fuel injectors in the throttle body have either failed (stuck open or leaking) due to residual sludge in the...
Question
It was recommended that I was to get a fuel injector cleaning. Would getting the product from the auto store and putting in it my gas tank do the trick.
Hi there. Any solution will help clean out the fuel system. I recommend getting Sea Foam and putting the whole bottle in the fuel tank and fueling up the tank. This solution will remove all water in the fuel, debris...
Question
Van wont strat after sitting overnight. What could be the problem?
Obviously, there is a fault in either the ignition system, the fuel system, or in the air induction system. If you are truly detecting the odor of gasoline, you might try holding the accelerator pedal firmly to the floor while...
Question
Hi I have a 06 dodge sprinter with 300k miles 2.7l. I have oil coming out from the injector (2) Could I be having bad rings?
Hi there. Check the crankcase ventilation valve and see if it's plugged up. The valve will cause the engine crankcase to build up too much pressure and the injector seal could be cracked causing the engine oil to come out...
Question
Misfire happens at 1500 rpm's.
Hi there. Check the fuel injectors one at a time by disconnecting the harness and see if the engine stumbles or not. If the engine stumbles when the injector is turned off, then the injector was working. If the engine...
Question
Car is misfiring on cylinder 4, 5, and 6.
Check the harness to the fuel injectors to the cylinders 4, 5, and 6. There could be a loose connection or the injectors could have failed. Put a noid light on each injector and see if there is power to...
Question
My car has been sitting in a garage for 2 years
If gasoline was left in the fuel tank for 2 years, the tank would have to be thoroughly drained. The fuel filter should be replaced and it is preferred to remove the fuel injectors from the fuel rail and send...
Question
I took out the spark plugs that were wet of gas and I put in new ones. Truck starts right up runs for a few blocks and then starts chugging.
Hi there. Check the fuel injectors and see if they are leaking or if there is debris in the nozzle. A leaking injector will cause the spark plugs to be wet and make the engine chug. If you need further...
Question
One cylinder doesnt seem to be firing.
If the engine was running fine before the injector swap out, then the cylinder that is not working properly has an injector that is not working. I recommend installing new injectors and not re-manufactured injectors as they can fail. If...
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
P0175 p0101
Check the fuel injectors and see if they are leaking and not atomizing properly. The injectors could be working fine but dripping instead of spraying. I recommend performing a injection cleaning on the engine to see if the injectors will...
Question
Wondering if fuel injector(s) is/are going bad
Although faulty fuel injectors could cause the issue you are describing, the symptoms associated with the diagnostic trouble code you found, namely P0344 are consistent with the symptoms that you are reporting. Consequently, you are better off resolving the fault(s)...
Question
1997 GM TBI 5.7 : Idle too high
Hi there. Check for any vacuum leaks that the engine may have. Look for any vacuum hoses or ports that are not connected. Vacuum leaks on the engine will contribute to the engine having a higher idle. If the vacuum...
Question
Van chugs when accelerating.
The chugging is being caused by either the fuel monitoring system (fuel injectors or throttle body injection) is metering too much fuel into the cylinders or the fuel filter could be plugged up causing the fuel system to drop in...

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