Skip the auto shop - Our mechanics make house calls

Q: My car stutter starts, but only after driving it for a few minutes.

asked by on

MY car was siting in my garage for 8 years without being started. When i decide to start driving the car i had to replace the fuel pump because the car wouldn't start.After replacing the fuel pump the car started. One week later the car started stutter starting. A check was done on the fuel pump and it was at 50psi instead of 60psi. I hesitate to replace the fuel pump because the car starts up fine in the morning but stutter start after driving it a while. Could it be something else causing the stutter starting that is having an effect on the fuel pump pressure?

A: Hey there. This may also be caused by what ...

Hey there. This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping properly, but the fuel may not arrive at the fuel injectors at the proper psi. When this happens, this can cause a lean fuel condition which may cause the car to hesitate, misfire, or stall. If you would like to have an expert pinpoint the issue, a certified professional from YourMechanic can come to your car’s location to inspect the hard start problem and confirm which repairs are needed.

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: Oil on electrodes of spark plugs and cylinders

First, visible amounts of oil on the spark plug electrode is never a good sign. To me, if the vehicle starts and struggles to run, there may be a major mechanical malfunction regarding your explanations. Have the mechanical timing checked...

Q: Why would a mechanic add a thickening agent to motor oil?

Hi there. I understand your concern. I have never seen a reputable new car dealership add anything to engine oil, especially anything to thicken the oil. The only reason that oil will gel (thicken) is from insufficient oil change intervals....

Q: Truck cranks but won't start - 1997 Chevy C1500

It sounds like you may have an intermittent electrical problem. I would recommend having all of the wiring that is in your fuel system checked to ensure that it is all in good condition. If any wiring has any damage...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...