Q: Car takes multiple tries to start when cold. Fine when warm. New battery. DLR says check valve on fuel pump assembly. Needs entire assembly?

asked by on

2013 Hyundai Santa Fe w/2.0T (64k miles). Car takes multiple tries to start when the engine is cold. Fine when warm. Has new battery. Dealer says it's a sticking check valve on the fuel pump assembly, requiring replacement of the whole assy. - $800 (not under warranty). Does this sound like the right diagnosis? Price seems really high too.

My car has 64000 miles.
My car has an automatic transmission.

The fuel pump has a small check valve the is suppose to keep fuel pressure up to the fuel injectors after you shut off the engine. The check valve is an integral part of the fuel pump assembly. The way to test the check valve is to monitor fuel pressure after shutting off the engine to see if the fuel pressure drops to zero in less than 10 minutes. This would cause the engine to be hard to start or crank for a longer period until the fuel pressure builds up enough to start the engine. Replace the fuel pump in tank to fix the concern.

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
  1. Home
  2. Questions
  3. Car takes multiple tries to start when cold. Fine when warm. New battery. DLR says check valve on fuel pump assembly. Needs entire assembly?

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: Q: Door not opening.

Hello, If the door unlock knob or lever is in the unlock position and the door won't open, there is a good chance that the door latch is broken. The door panel can be removed or the panel may have...

Q: fuel tank filler neck broken

The filler neck is readily available. For example, if you input your year, make and model and search on "fuel filler neck" at Car-Part.com you will find an exact match for your truck with available vendors and prices. New ones...

Q: Replaced starter now the fuel pump not working

Hello there, it is unlikely that both the starter and fuel pump would fail on your 2011 Hyundai Sonata at the same time. In cases like this, the car needs to be thoroughly inspected and the root cause located before...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.