Skip the auto shop - Our mechanics make house calls

Q: Fuel pressure low

asked by on

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Fuel pressure low

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

Q: Windshield wipers not working on jeep

Hi there. The wiper linkage attaches to the motor with a ball and socket. Their is a steel ball on the motor, and a plastic bushing that presses over it. When any bushing is worn, it can pop off. The...

Q: Need torque specs for starter motor bolts

Hello. If the bolts are 10 mm (in diameter) and are grade marked 10.9 on the heads, torque them in the range of 37 to 45 ft lbs. with NO oil on the threads (dry). If the grade is marked...

Q: Car won't start but cranks over gas gauge is broke

Hello, thank you for writing in. All signs thus far point to the fuel pump going out. You can test the available power to the fuel pump to ensure the pump is being supplied with the proper voltage. You can...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...