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.

A: Hi! I would recommend having a technician d...

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Engine runs at 4000 rpms shuts off get a P2074 code

There is a technical service bulletin 18-007-08 that covers this code and calls for a reprogram of the PCM to fix the issue. You should have the reprogramming done first before replacing any parts for this code. The P2074 code...

Q: Throttle Body needs replacing, is cardone re-manufactured 'better' than a 'new' throttle body

When it comes to remanufactured or brand new you are better off in most cases with the new one. The reason the company did not have the remanufactured one in stock is due to there has not been enough old...

Q: Cranks but doesn't start

You have replaced lot's of things on your car. I'm not sure you replaced it all trying to fix a no start or if you replaced it all out of maintenance. When we replace this many parts at once we...

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...