Showing articles & questions for topic
fuel system

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...

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...

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....

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....

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...

The best way to approach a starting (https://www.yourmechanic.com/services/car-is-not-starting-inspection) 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...

As you may know, your car has a fuel sending unit (https://www.yourmechanic.com/services/fuel-gauge-sender-replacement) 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...

This may also be caused by other things such as low fuel pressure or leaking or intermittently working fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement). When the fuel pressure is low, it will fail to bring the correct amount of fuel pressure to the...

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...

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...

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...

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...

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...

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,...

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 (https://www.yourmechanic.com/services/loud-squealing-or-squeaking-is-coming-from-timing-belt-inspection) and check each pulley for play.

If the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have...

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...

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),...

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...

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...