Cranking no start

MAUGHAN6415

MEMBER
2011 HYUNDAI ELANTRA
1.8L
4 CYL
2WD
AUTOMATIC
106,000 MILES

I have the car listed above GLS model. The car drove fine, and drove all morning no problems. Parked it around 3:00 pm and then went to start it around 9:40 pm and it just cranked but wouldn't start. I pushed the gas to the floor it started for a few seconds but shut off immediately after letting foot off the gas. Ever since the car will not start. I have replaced the camshaft sensor (intake), the crankshaft sensor, battery and spark plugs. Fuel and fuel pressure are good. No blown fuses. Car will start for a second or two after removing fuel pump fuse but will not when the fuse is put back in. There is also spark. I'm at a loss the mechanic I have it sitting at is at a loss as well. When we purchased the car it was used and it did not come with the original key only a spare one. Any help would be appreciated.

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,164 POSTS

Hi and thanks for using 2CarPros.

Here is a link that discusses crank but no start conditions.

If the engine starts for a second with the fuel pump disconnected, that tells me it is getting too much fuel. Most commonly, that is caused by a faulty fuel pressure regulator. The bad news is that the regulator is in the fuel tank.

Here is what I suggest. First, confirm that fuel pressure isn't too high. Here is a link that shows how that is done:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Next, here are the directions specific to your vehicle. The manufacturer's specs are included in these directions. Additionally, the attached pictures correlate with these directions.

____________________________

Fuel Pressure Test

1. Release the residual pressure in fuel line .

CAUTION:
When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the GDS after completion of "Release Residual Pressure in Fuel Line" work.

2. Install the Special Service Tool (SST).
(1)Disconnect the fuel feed tube from the delivery pipe.

CAUTION:
There may be some residual pressure even after "Release Residual Pressure in Fuel Line" work, so cover the hose connection with a shop towel to prevent residual fuel from spilling out before disconnecting any fuel connection.

(2)Install the special service tool for measuring the fuel pressure in between the fuel feed tube and the fuel delivery pipe .

See Picture 1

3. Inspect fuel leakage on connections among the fuel feed tube, the delivery pipe, and the SST components with IG ON.
4. Measure Fuel Pressure.
(1)Start the engine and measure the fuel pressure at idle.

Fuel Pressure:324 - 363 kPa (3.3 - 3.7 kgf/cm2, 46.9 - 52.6 psi)

NOTE:
If the fuel pressure differs from the standard value, repair or replace the related part .

See Picture 2

(2)Stop the engine, and then check for the change in the fuel pressure gauge reading.

Standard Value:The gauge reading should hold for about 5 minutes after the engine stops

NOTE:
If the gauge reading should not be held, repair or replace the related part .

See Picture 3

(3)Turn the ignition switch OFF.
5. Release the residual pressure in fuel line .

CAUTION:
When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the GDS after completion of "Release Residual Pressure in Fuel Line" work.

6. Test End
(1)Remove the Special Service Tool (SST) from the fuel feed tube and the delivery pipe.
(2)Connect the fuel feed tube and the delivery pipe.

________________________

Picture 4 shows the regulator's location. Pic 5 is a legend of the parts contained in picture 4.

As I mentioned, since it runs with the pump disconnected, it sounds like pressure is too high. This is where I would recommend starting.

Let me know if this helps or if you have other questions.

Take care,
Joe

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