Showing articles & questions for topic
fuel system

Related articles

3 Reasons Your Car Smells like Rotten Eggs
A sulfuric or rotten eggs smell indicates an excess of byproducts left over from failed combustion. Removing the smell requires part replacement.
Is it Safe to Drive With an EVAP Leak?
While it is safe to drive with an EVAP system leak, it causes excess car pollution. Fixing the problem is often as simple as tightening the gas cap.
Symptoms of a Bad or Failing Fuel Pump
Common signs include a whining noise, hard starting, engine performance issues, and an inability to start the car.
Is It Safe to Drive with the Check Engine Light On?
The check engine light is tied into your car’s onboard diagnostics system, and it’s designed to light up (usually in yellow) whenever...
How Far Can You Drive Your Vehicle on Empty?
Knowing how many miles you can drive on an empty gas tank prevents getting stranded. Nissan Altimas can go the farthest when the low fuel light is on.
P2187 OBD-II Trouble Code: System Too Lean at Idle DTC
P2187 P2187 trouble code definition The P2187 OBD-II fault code means the vehicle’s on-board computer has detected a lean fuel mixture at an idle in either Bank 1 or Bank 2 (the side of the engine with the corresponding number...
Why Can’t I Top Off My Tank?
Nearly Nearly everyone who has been behind the wheel of a vehicle has pumped gas into the fuel tank until the tank was full. When the tank is full, the nozzle makes a ‘clunk’ sound and the gas stops flowing....
Why Can’t I Top Off My Tank?
Nearly Nearly everyone who has been behind the wheel of a vehicle has pumped gas into the fuel tank until the tank was full. When the tank is full, the nozzle makes a ‘clunk’ sound and the gas stops flowing....
Why Can’t I Top Off My Tank?
Nearly Nearly everyone who has been behind the wheel of a vehicle has pumped gas into the fuel tank until the tank was full. When the tank is full, the nozzle makes a ‘clunk’ sound and the gas stops flowing....
How to Clean a Throttle Body
A throttle body needs cleaning when the engine idle is rough, the engine stumbles through acceleration, or the Check Engine Light comes on.
Is it Safe to Drive With a Fuel Leak?
A fuel leak is when gasoline leaks from the gas tank of the vehicle. Underneath the car will be a spot of fuel on...
How Does the Carburetor Work Within the Fuel System?
The carburetor is responsible for mixing gasoline and air together in just the right amounts and getting that mixture into the cylinders. Though they...
How Does the Carburetor Work Within the Fuel System?
The carburetor is responsible for mixing gasoline and air together in just the right amounts and getting that mixture into the cylinders. Though they...
How Does the Carburetor Work Within the Fuel System?
The carburetor is responsible for mixing gasoline and air together in just the right amounts and getting that mixture into the cylinders. Though they...
How Does the Carburetor Work Within the Fuel System?
The carburetor is responsible for mixing gasoline and air together in just the right amounts and getting that mixture into the cylinders. Though they...
How to Tune and Adjust Your Carburetor
While all modern cars use computer-controlled fuel distribution systems, there are still many vehicles on the road that employ the traditional carbureted method of...
How Long Does a Fuel Injector Last?
The fuel that resides in your gas tank has to be carried to various spots of the engine to be burned and used...
4 Essential Things to Know About Running Out of Gas
While it would be nice if it wasn’t so, every vehicle can run out of gas. The good thing, however, is...
How to Troubleshoot a Gas Cap Cover That Won't Open
Gas cap covers, or fuel doors, get stuck closed and won't open if there's a faulty internal spring or lever, lack of lubrication, or bent fuel door.
How Long Does a Fuel Pump Usually Last?
Fuel pumps are a simple and rugged part of the fuel system. They are usually found inside of the fuel tank and are...

Related questions

Question
My car cranks but wont start
There are many causes of hard starting but illustrative ones are a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors), and contaminated or...
Question
Why is there water in my carburetor in my 1998 Jeep Cherokee Sport
The only way water gets into the carburetor is from fuel in the fuel tank. You got the water from the gas station fuel tanks. You need to add drygas (HEET) in the tank to try and get out the...
Question
Why does the check engine light keep coming back on?
The check engine light comes on and stays on if the onboard computer sees a problem that could cause an increase in emissions or a problem with its systems. After looking at most of the possible codes or issues that...
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
What is causing my engine misfire?
Engine misfires can be caused by a list of problems, but there are a few suspects that occur more than others. Generally, misfires are caused by either a spark or fuel issue, or in some cases a combination of both....
Question
What Does the Mass Airflow Sensor Do?
Older systems use a movable vane in the intake stream called a Vane Air Flow (VAF) sensor. The VAF sensor used in Bosch L-Jetronic, Ford, and most Japanese electronic port fuel-injection systems is a movable vane connected to a laser-calibrated...
Question
What does the low fuel warning light mean?
Your vehicle information display is capable of providing a number of different warning messages. The low fuel warning means exactly what you think it means. It will display with the word “Warning”, as well as the image of gas pump....
Question
What does the “Check fuel fill inlet” warning mean in the message center?
The “check fuel fill inlet” warning is an indication of an issue with the fuel cap, which covers the fuel fill inlet. Fuel caps are a vital part of the evaporative emissions (EVAP) system. If the fuel cap is damaged,...
Question
Vehicle wont start
The fuel system pressure should be checked to see if it is within specifications to start the vehicle and open the injectors. If the pressure is too low or no pressure then check the fuel pump connector and if it...
Question
Vehicle whining after belt replacement
Hi there. I would suspect another pulley that the serpentine belt drives has a dry/loose bearing. Have a certified mechanic, like ones from YourMechanic, inspect the noise and check each pulley for play.
Question
Truck will crank but will not start
The best way to approach a starting issue like this is to break it down and start with one system at a time. Keep it as simple as possible. If you have not already checked for spark, you will want...
Question
the truck turns over and over, but will not start
Without more information on the vehicle i would have to say you may have a fuel pump that is not pumping fuel. You should have the computer scanned for codes to the crankshaft or camshaft sensors. Then have the fuel...
Question
The fuel gauge is not working.
As you may know, your car has a fuel sending unit inside the fuel tank that operates on a float system. This monitors the level of the fuel in the tank using a float that relays these levels back to...
Question
Sugar in the gas tank
The first thing that has to happen is the fuel tank has to come out of the car and be thoroughly cleaned. The fuel pump, which lives inside the tank will need to be replaced. Your car may have an...
Question
Rough Idle
This may also be caused by other things such as low fuel pressure or leaking or intermittently working fuel injectors. When the fuel pressure is low, it will fail to bring the correct amount of fuel pressure to the injectors...
Question
ran out of gas, now won't start
Your first attempt at resolving should indeed be to simply add more fuel to the tank. Three more gallons will be sufficient if the problem is low fuel. If the starter motor itself is not functioning (i.e., no engine cranking),...
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
Problem with fuel system.
Fuel systems are very complex. They include dozens of components such as the pump, filter, lines, regulator, rails and injectors. If you suspect a problem with your fuel system, the best advice is to bring your vehicle to a trained...
Question
not starting
The first thing to check is to see if you have fuel pressure at the fuel injector fuel rail. Sometimes the fuel filter housing will block fuel from coming from the fuel tank and blocks the fuel from getting through...
Question
No fuel pressure
Lack of fuel pressure can be caused by a failing fuel pump or a clogged fuel filter. Depending on the fuel pressure specification, the fuel pump can be condemned. A proper diagnostic inspection should be performed in order to prove...

Need a mechanic?

Our certified mobile mechanics make house calls in over 700 U.S. cities. Fast, free online quotes for your car repair.

Get a quote

Post a question and get free advice from our certified mechanics.


Ask a question