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.

Fuel Pump Replacement $145.32 - $1299.70 Get a Quote

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.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I put my truck in gear?
There are many gears that your truck can be shifted into. These gears tell the car whether to drive, stay still, or move. To put your vehicle into gear. Hold down the brake pedal. Start the vehicle. Move the gearshift...
How do I know when the electronic key battery is dying?
The electronic key battery normally lasts one to two years, at which point it will likely die and need to be replaced. To give you a warning of this, your vehicle will sound an alarm in the cabin when the...
Driver's seatbelt not locking into place
That problem is usually caused by the buckle on the right side of the seat. Look very closely down inside of it to see if something fell in, such as a coin. Some buckles are “pretensioners”, which means that they...
Car burning a lot of oil
Hello. Your vehicle is equipped with an oil level sensor and an oil pressure sensor. The light will come one from either sensor. If the engine is making a rattling noise, then I would worry about problems such as: the...
cost of maniverter
Depending on the engine you have this price would be pretty close if both of them are being replaced. If this is for only one then it is high. You can get each manivertor online for less than $500 each...
Erratic RPMs, 1995 BMW 318is
Hello there, there are a few possible causes for your 1995 BMW 318is to have a fluctuation in the RPM's. The most common are a vacuum leak (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-vacuum-leak), oxygen sensor (https://www.yourmechanic.com/services/oxygen-sensor-replacement), throttle sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement), exhaust leak (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-an-exhaust-leak), or the fuel...
I have to fill gas tank everyday due to car using alot of fuel
Hi there. There are dozens of problems that can lead to a drop in gas mileage, some of them are serious and some can be easily corrected. Here are some of the more common issues that can affect the fuel...
Key stuck in the acc position. Car will not start
It sounds like you have an ignition switch that has failed. Inside the switch is a set of tumblers that the key is designed to fit into. When these tumblers wear out over time due to the key being inserted...
What could b wrong if when I het to 55 mph and then push the gas the car vibrates. But when I let up on the gas it's fine. And the
The vibration and shaking when accelerating may be a transmission shift issue or the engine is misfiring under a load. The shaking when braking may be due to warped brake rotors. You should have the computer scanned for misfire or...

Related articles

How Does Fuel Injection Work?
When When it comes to engine performance, there are few things more important than fuel delivery. All of the air you can forcefully induce into the cylinders will do nothing without an appropriate amount of fuel to burn. As engines...
Symptoms of a Bad or Failing Fuel Filler Neck
Common signs include a fuel smell coming from the car, the Check Engine Light coming on, and fuel leaks.
How to Replace a Fuel Meter Assembly
The fuel gauge assembly indicates your fuel level. The fuel gauge will no longer work if there is an application of reverse charge or corrosion.