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fuel system

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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.
Symptoms of a Bad or Failing Fuel Filter (Auxiliary)
If your car is hard to start, developing engine performance issues, or has the Check Engine Light on, consider replacing the auxiliary fuel filter.
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.
How to Know What Type of Gas to Use
Your vehicle is propelled by a combustion engine. That means that fuel is injected into the engine’s cylinders in some fashion, where it combusts, or burns, to...
How to Replace a Fuel Filler Cap
A good fuel filler cap safely seals the fuel tank. Signs of a failing fuel cap include the smell of gas, stripped threads, or a cracked cap.
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...
How to Figure Out Which Type of Fuel Gets the Best Mileage
We all want our car to go longer on a single tank of gas. While all vehicles come with a mileage or mpg ranking, mileage can actually vary...
How to Use a Fuel Injection Cleaning Kit
Dirty fuel injectors are a common problem for many vehicles in this day in age. With the exception of direct injected and carbureted vehicles, the vast majority of cars on...
How to Replace a Fuel Gauge Sender
The fuel gauge has a sender that goes bad when it says that the fuel level is different lower or higher than it actually is.
P2187 OBD-II Trouble Code: System Too Lean at Idle DTC
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...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Replace a Fuel Rail Sensor
The fuel system has a fuel rail sensor which fails when the engine operates erratically, has difficulty starting, or the Check Engine Light comes on.
How to Replace a Fuel Pump Shut Off Switch
The fuel pump shut off switch may be faulty when the Check Engine Light comes on or if the engine suddenly turns off while driving.
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.
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 Pump Relay
The fuel pump has a relay that fails when there is no audible humming sound as the ignition is turned and when the car cranks after longer than usual.
How to Replace a Fuel Meter Assembly
The fuel gauge assembly indicates your fuel level. The fuel gauge will no longer work if there is an application of reverse charge or corrosion.
How to Replace Fuel Injection Lines
Fuel injection lines transfer fuel from the fuel tank to the car engine. Now made of plastic, fuel lines don't rust and hold up to 750 psi.
How to Replace a Carburetor on Most Cars
A carburetor replacement involves the air cleaner, vacuum hose, car fuel line, and a number of other parts. This complex procedure varies by vehicle.
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
Getting fuel, spark, compression, air still no start
Hello, thank you for writing in. Considering you have taken on a lot of the main components all at once, you should take a moment to go back through the entire project thus far to make sure everything was done...
Question
I have an 01 Malibu that runs sluggish and stalls. Noticed the smell of fuel when running the heat.
If you have a heavy fuel smell coming into the cars interior then you should check the fuel pressure regulator and fuel lines for leaking fuel. You should disconnect the vacuum line to regulator to see if fuel is coming...
Question
How long does it take to replace a fuel line?
The fuel lines on this vehicle go from the fuel tank all the way to the engine and may require the fuel tank to be lowered for access to get to the lines on top of the tank. The entire...
Question
Can I just refuel my car now?
You should first add only about 5 gallons of premium fuel and replace the fuel filter. Then run the engine to see if the fuel pump works and injectors are not clogged or stuck. If engine starts and runs then...
Question
Gas is coming out from under the hood
You didn't say whether you got the car to run, but if you did, do not drive it. It can be very dangerous in this condition. The fuel pumped up to the engine is under pressure, so when it leaks...
Question
My 2006 Pontiac g6 2.4l is losing fuel pressure and is taking longer to start, also smell gas
You will need to have the complete fuel system checked for line or pump leaks to find cause of fuel smell first since you may have a leaking pressure line or top of fuel pump on tank. Once leak is...
Question
Brand new fuel pump starter altn. And battery what would cause it not to kick over car is a 2006 hyundai sonata almost 200k miles
Hello, thank you for writing in. The car my be having an issue with the injectors themselves, with the main computer, or with a clogged line. There are several tests you can do at this point to help rule some...
Question
When i rev the engine hard, it loses power.
This sounds like you are having low fuel pressure or fuel volume getting to the engine. You will need to have the computer scanned for codes and the fuel pressure checked and while accelerating see if the fuel pressure drops...
Question
96 jeep grand cherokee fuel injectors
Buying the wrong parts is a frustration every mechanic endures. The parts replacement companies do not always have the correct information and unless your parts man really knows your car, he can only go by the information he has. That...
Question
I have a 1995 5.8 liter econoline van that is not maintaining fuel pressure on the fuel rail.l
Hello, thank you for writing in. One aspect to consider is that you may have a fuel line blockage. You can also install an in-line gauge before the fuel filter to test what the pressure is up to that point....
Question
Yes I had a new fuel pump put in and sense then my fuel gauge does not work right, is there something I can rest at home
If the fuel indication is not correct or stays lower than it should be then when the pump wiring may have been out of position and is blocking the level sender rod blocked from moving its full motion. You will...
Question
What in the fuel intake system can cause to vibrate at idle?
You will need to have the cars engine checked to see if you have a fuel leak at the fuel injectors that may cause fuel smell and rough running. Do not drive vehicle until getting it checked due to a...
Question
Have smoke and fuel coming out of exhaust pipe
The pressure regulator is usually located on the fuel rail and is easily accessible. But I wouldn't change it unless you've done a fuel pressure test. There are a number of other things that could be wrong that would lead...
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
Can a cracked fuel line/pipe cause an o2 sensor to go bad?
Hello, thank you for writing in. The fuel line being cracked is going to cause issues with the way the engine runs, and a lean or rich air/fuel mix will cause the oxygen sensors to detect the difference in carbons...
Question
What mean check feud cap on my Honda
The computer has detected the fuel cap is loose or you have a leak in the evaporative gas tank vapor control system. If gas cap is tight and not off or loose then you will need to have the system...
Question
Hello! I have a 2007 toyota camry Se,And I don't know where the "Fuel pressure regulator ",Was located.
Your fuel pressure regulator is mounted to the fuel pump module as part of the fuel pump assembly inside the fuel tank.
Question
I have a 1998 Chevy Tahoe that is getting too much fuel the fuel comes out of tail pipe miss firing on several cylinders sucking gas
Hello. This is always an issue with the fuel injection unit located inside of the intake manifold. In some cases it is just the pressure regulator and in others the entire injection unit needs to be replaced. Most of the...
Question
what happens if you add a lead substitute to an engine that run premium unleaded?
You should not add any lead replacements in this engine since the pistons and valve train is designed to not use it or need it. Lead was used to cool and lubricate the valves in older engines from the 60...
Question
How much to get this fuel leak repaired?
Before you can know how much it will cost to repair something you will need to have the vehicle checked to see what is leaking fuel and where it is coming from. You may have damaged a fuel line or...

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