Q: Fuel pressure low

asked by on February 08, 2016

I have replaced the fuel pump and fuel filter, and checked the spark plugs, and distributor cap. The car still starts, but when I checked the valve pin on the fuel rail, it didn't shoot fuel out of the valve. It only seeps or one drop of fuel will come out. I assume there is no pressure on the fuel line. All of the wiring checked out, so I can't figure what is wrong.

Hi! I would recommend having a technician double check the fuel pump, filter, fuel lines, fuel related wiring, and fuses. It’s always best to double check components pertaining to an initial concern in case something was missed. Also, there is a strong possibility of a restricted fuel line given the age of the vehicle. I would also test the crank position sensor because it is integrated into the fuel supply system. The computer uses the crank position sensor to gauge how much fuel the engine needs. If the sensor is malfunctioning the computer wont supply the proper fuel amounts or at worst may not supply fuel at all. A technician, such as the ones at YourMechanic, will be capable of inspecting your lines for any restrictions and check to see if previously installed components are functioning correctly.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Transmission dose not like to shift to second gear after it goes though the gears

Hi Shane. Thanks for contacting us today. Usually a problem like this is due to an obstruction of transmission fluid - either in the hydraulic lines or due to an inner seal or gasket failure. The best way to test...

Grand Cherokee 1999 Side Swiped Door Replacement Possibly.

My first recommendation would be to determine how many miles the vehicle has and memorize it. Then I would look over your vehicle and give it your honest opinion of its condition (assuming that the doors were fixed). Then I...

When I start the Jeep I hear a clicking noise once I turn the ignition , it wouldn't start til I pushed the accelerator

Hi There, It sounds like you may have a weak battery or potentially a faulty starter solenoid. Generally, pressing the accelerator makes no difference on today's modern vehicles due to the throttle by wire technology cars are equipped with. The...

Related articles

How Can I Keep My Fuel System Clean?
Proper Proper maintenance of the fuel system is crucial for consistent long-term performance of a vehicle. The most easily clogged parts of the fuel system are the fuel injectors themselves. There are a number of ways this can happen: ...
The Most and Least Expensive Cars to Insure
Car insurance quotes depend on the car make and model. The Honda Odyssey is the least expensive and the Dodge Viper is the most expensive to insure.
What Is Dry Gas?
Dry Dry gas is a very helpful fuel additive that is used to remove water from gasoline and prevent water-contaminated gasoline from freezing. While the solution itself is actually called dry gas, there is one brand of this fluid named...