Fuel Problem
The engine cranks but does not appear to get fuel. I replaced the fuel pump relay and the fuel pump was replaced 4 years ago. I assume the fuel pump went bad but was wondering what else I might check before dropping the gas tank or paying someone to do this.
Thank you
Experienced mechanics share their insights in answering this question :
The only thing to check would be to see if the engine is getting ignition spark to the spark plugs. If you are getting spark then test the fuel pressure at the engine test port to see if there is any pressure. Then open gas cap and have someone listen at tank opening while someone cycles the key to on several times with out trying to start the engine and listen to see if the pump can be heard. If the pump is not working then it is most likely bad and fuel pump and filter should be replaced. A mechanic from YourMechanic can come and perform these tests and others to confirm the fuel pump needs replaced.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Many engine failures in the 3.3/3.8L V6 have been attributed to cam bearing failure, which can usually be traced back to a low oil level or loss of oil pressure due to a worn oil pump. When the cam bearings are starved for oil, metal particles can flake off and circulate throughout the engine.
A bad fuel pump can lead to a rough running engine because it is not getting enough fuel. This will lead to a decline in gas mileage. If this issue is not addressed it will lead to a rough, idle, sputtering and stalling. Clogged Fuel Filter: A clogged fuel filter will also cause problems with gas mileage.
Airflow sensor: When your airflow sensor is failing or dirty, it can send wrong signals to your engine`s computer that can result in power losses while accelerating. This type of issue usually causes your Check Engine” light to come on and your vehicle to behave sluggishly even when there is power.
An indication that a vehicle is not receiving the right mixture of air and fuel is if the vehicle jerks or surges forward at high speed. Several components of the fuel or air intake system could cause this jerking or surging sensation to happen. Issues within these systems can also cause fuel economy to worsen.
Both engines are essentially identical except for the bore and stroke. The 3.3L engine has 93 mm bores and an 81 mm stroke. The 3.8L engine has larger 96 mm pistons and an 87 mm crankshaft.
5 quarts (with filter). After refill check oil level.
If you`re wondering why your car is using fuel so quickly there are several causes to consider. Low tyre pressure, dirty air filters, overloading, and poor driving habits are just a few of the many reasons why your car`s fuel economy can suffer.
If your car tyres are worn out, the grip is lost and as a result, they spin more to move. This can be a major reason which can cause your car to consume more fuel. On the other hand, if your tyres are inflated below the recommended pressure, your car will consume more fuel in this case too.
The most common Dodge problems include faulty electronic gear shifters, low mileage engine blow-outs, rusting, wobbly front ends, and dashboards that crack easily. Dodge has been around since the 1900s, making it an American classic with over one hundred years of experience in the industry.
The most likely issue is that a component is clogged. A clogged fuel filter is the most common reason, although a loss of power in your car could also indicate problems with the fuel pump or fuel line. Impurities or debris may be blocking the system, which causes the loss of power in a car.
What could the problem be? An acceleration problem is usually the result of insufficient fuel, air, or spark during the combustion process. Worn-out spark plugs or the electrical cables attached to them are one of the most common causes of cars stuttering.
If you are experiencing jerks in your car when accelerating, it might be due to a few reasons. The first reason is that the throttle pedal is not positioned correctly. The second is a result of the throttle cable being too tight or too loose.
The Chrysler 3.3 and 3.8 engines are V6 engines used by Chrysler from 1989 to 2011 This engine family was Chrysler`s first 60° V6 engine designed and built in-house for front wheel drive vehicles, and their first V6 not based on a V8.
Featuring a dual-injection system, the 3.3L Ti-VCT V6 engine improves both power output and efficiency. This engine is capable of 290 HP, 265 lb.
The Duratec 33 is a naturally aspirated V6 engine from Ford Motor used to power full-size pickup trucks and utility vehicles, or more commonly known as SUVs. Featuring a dual overhead cam (DOHC) design, in a V configuration, the Ford 3.3L Duratec architecture has been part of the Ford Cyclone engine family since 2018.
The best thing you can do to keep your car`s gas mileage up is to perform regular oil changes with the type of oil specified in your owner`s manual. High mileage engine oils may help reduce oil leaking and oil consumption but it will take away some of the potential fuel efficiency.
Air conditioning uses fuel
An air-conditioning (a/c) system can increase fuel consumption by up to 20% because of the extra load on the engine. The actual load depends on the vehicle`s interior size, the outdoor temperature and other conditions.
When an engine misfires, it leads to poor engine performance, which in turn also affects the car`s fuel economy. Thus, bad spark plugs can decrease engine efficiency and force it to consume more fuel, thus increasing the car`s fuel consumption.
comes from the founders of the company, John and Horace Dodge. The two brothers started the Dodge company in 1900 as a mechanic shop after gaining experience as engine manufacturers for Ford. However, this name is a little confusing since Dodge is also a word in English meaning to avoid or move aside suddenly.
With excellent reliability ratings, performance metrics, and customization options, Dodges are some of the best muscle-style cars on the market.
Trouble accelerating can come from a few different engine issues. These include, but are not limited to, dirty fuel injectors, low fuel pressure, and restricted airflow. A problem with the mass airflow sensor, throttle position sensor, or engine speed sensor can also cause a car to have difficulty picking up speed.
Dirty Fuel Filters
Like an air filter, the fuel filter screens dirt and debris in the fuel. If it gets dirty, it could prevent enough fuel from getting to your engine causing jerking in your car.
If you`re driving at freeway speeds and notice your engine sputter or jerk, you may have a failing fuel pump. This problem is caused when the fuel pump can`t deliver a smooth flow of fuel to the engine; periodically, your engine receives only air when it was expecting to receive fuel.
A common cause is a problem with the spark plugs or ignition system. Other potential causes include a blockage in the fuel line, a faulty oxygen sensor, or a problem with the mass air flow sensor. Vacuum leakages can also cause a delay in acceleration. A clogged air filter or low engine oil level can also be a cause.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
I have a 1981 e-350 with dual fuel tanks the p.o. added a third tank and 3 electric fuel pumps along with sepparate gauges and swi
ANSWER : The switch you are referring to is vended with the required electrical and fuel schematic (I just looked in the box) that answers your installation question. If you want an advance view, here is a link as well. Yes, you need a return line and just refer to the aforementioned link. If you are retrofitting back to OEM, I strongly encourage you to buy the original Factory Service Manual (FSM). There are lots of details attending this system and obviously it is difficult to recount it all here. The FSM will make your life much easier and you can then make sure your installation is perfect. Alternatively, YourMechanic can dispatch a certified mechanic and perform the whole retrofit and check out if you desire. Just request and schedule a generic service such as fuel pump service and the mechanic will come to your location and estimate the parts and labor required. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Read Full Q/A … : Fuel Problem
Installed new delphi fuel pump and fram fuel filter. still no pressure on fuel rail valve and wont start. 2003 Chevrolet Tahoe
ANSWER : Hi there – I suspect you have weak power getting to the fuel pump. I would first check the voltage coming out of the fuel pump relay. If the contacts in the relay are burned, you will not get reliable current flow to the pump. Check the fuel pump ground as well (voltage drop across the ground, not just continuity). I recommend a fuel system inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : Fuel Problem
Just replaced my fuel pump but its not getting any power tested fuel pump relay and fuel fuse both good tested the wires all good.
ANSWER : You need to look at the theft light on dash to make sure it comes on and goes off when you turn the key to the on position. If light comes on and stays on then your theft system is causing the fuel pump to not be engaged. I recommend you check the theft system and then scan the computer for theft system codes. You may need to reprogram the keys to work or you have an bad sensor for the ignition key in the steering column.
Read Full Q/A … : Fuel Problem
Fuel pressure
ANSWER : Hello,
You may want to try checking the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one of the ground wires to complete the circuit and send power to the fuel pump. If the wires all have power running through them, then it is likely you have a faulty relay. The wire coming from the fuel pump is the other ground wire. I would recommend having an expert from YourMechanic come to your location to diagnose your wiring as this can be very difficult and time consuming without the proper wiring diagram.
You may want to try checking the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one of the ground wires to complete the circuit and send power to the fuel pump. If the wires all have power running through them, then it is likely you have a faulty relay. The wire coming from the fuel pump is the other ground wire. I would recommend having an expert from YourMechanic come to your location to diagnose your wiring as this can be very difficult and time consuming without the proper wiring diagram.
Read Full Q/A … : Fuel Problem
1983 toyota corolla 69,000 miles. Not sure if it’s a problem with fuel lines, fuel tank, or fuel filter.
ANSWER : If the exhaust smells like gasoline, the fuel mixture is either way too rich or you have a weak ignition system that is not burning the fuel efficiently. You can pull spark plugs out to check them and if they are wet or black they may be fouled and this can cause very rough running, misfires and stalling. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer inspection of the vehicle in order to run a few tests and offer a more personal diagnosis of your stalling and drivability concerns.
Read Full Q/A … : Fuel Problem
I have a truck that won’t run and is not getting gas to the engine. Fuel pump is running, have a new filter and new fuel pressure
ANSWER : Hi There,
It sounds like you may have a clogged fuel injector or potentially a faulty injector that is fried internally. I would suggest testing them if you have access to a multi meter. Disconnect the injector from the electrical connector and set your multi meter to Ohms mode and measure the resistance of the injector. After testing all injectors, compare the resistance. They should be the same or very close. If they are not, they will likely need to be replaced.
It sounds like you may have a clogged fuel injector or potentially a faulty injector that is fried internally. I would suggest testing them if you have access to a multi meter. Disconnect the injector from the electrical connector and set your multi meter to Ohms mode and measure the resistance of the injector. After testing all injectors, compare the resistance. They should be the same or very close. If they are not, they will likely need to be replaced.
Read Full Q/A … : Fuel Problem
Replaced fuel pump. Car won’t start. 2002 Infinity I35
ANSWER : Hi there – the metal component you describe is a fuel check valve on the fuel return line. Its function is to maintain a small amount of pressure in the fuel system so that starting does not require the fuel pump to run very long before the engine will start. Having replaced the fuel pump and fuel filter, I would check fuel pressure while the car is running. This is to check the fuel pump relay for burned contacts that won’t support full electrical current to the pump, and for proper fuel pressure – a malfunctioning fuel pressure regulator could also restrict power and higher speeds if pressure is too low. I would recommend an inspection of the fuel system by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : Fuel Problem
I changed the fuel pump in my car thinking that it was the problem, but I’m still not getting power to my fuel pump.
ANSWER : If there is access to a wiring diagram, you can disconnect the fuel pump harness and install a test light in between the power and ground circuits and turn the key to accessory or try to start the vehicle and if the test lamp lights up, the circuit is not the problem and you may have picked up a faulted new fuel pump. IF you can hear the fuel pump power up and there is no fuel pressure at the fuel rail, the fuel filter may be clogged. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer inspection of the vehicle to run a few tests and offer a more personal diagnosis of your fuel system concerns.
Read Full Q/A … : Fuel Problem
