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 November 14, 2016

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

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

Hi, can i clean the engine with any greaser? Thanks in advance

Hello, thank you for writing in. While we cannot advise you on a certain product to use, there are various products that will work just fine, and you will want to research which one you feel best using. When cleaning...

when looking at the car with hood up where is the downstream O2 located left or right side of the car

The downstream oxygen sensor is screwed into a "bung" on the rear of the catalytic converter assembly beneath the vehicle. The sensor should be readily visible as it will have wiring connected to it. The sensor should not be removed...

Shut down while driving

Hello, thank you for writing in. It certainly sounds like the vehicle is losing electrical power, which is an almost definite sign that the alternator has failed. It is solely responsible for providing electrical power to the vehicle while driving....

Related articles

A Buyer’s Guide to the 2013 Chevrolet Spark
The The Chevy Spark nimbly walks the line between being functional and being totally adorable. In the spirit of mini cars past like the Ford Festiva and the Yugo, this spritely little creation offers improved safety combined with the tech...
Symptoms of Bad or Failing Fuel Injector O Rings
Common signs include an odor of fuel in the car, fuel leaks, and the Check Engine Light coming on.
How Long Does a Fuel Meter Assembly Last?
Knowing Knowing how much gas is in your car is important and can help you to avoid being broken down on the side of the road. The only way that you will be able to find out when your car...