My Engine cranks over but will not start?

Tiny
PILOTROB
  • MEMBER
  • 2004 HYUNDAI SANTA FE
  • 2.7L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I can hear the fuel pump running when turning the key, I have spark from the plug wire to ground. I have sprayed starter fluid into the throttle body - nothing. I have checked fuel injector pulse with a noid light. I could also feel fuel pulse in the fuel line at the fuel pump when the car is started. Checked relays and fuses. Replaced all spark plugs (needed it anyway). New battery, plus I tried jump starting it.
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Tuesday, September 25th, 2018 AT 3:57 PM

59 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi and thanks for using 2CarPros.com.

If you have proper fuel pressure, spark, and the injectors are working, it does not have a choice but to run. However, since it will not even start with starting fluid indicates a few possibilities. One of the following has to be wrong: weak spark, engine timing, or low engine compression. Does the engine sound normal when it is cranking or does it seem off?

Here is a link that discusses different reasons why engines will not start and ways to check. Some of the items listed will not help because you already did a lot of the work. Regardless, check through it and see if anything helps.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Also, let me know how it sounds when cranking. If you have other questions or need additional information, let me know.

Take care,
Joe
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Tuesday, September 25th, 2018 AT 6:55 PM
Tiny
COWBOYKING1988
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  • 1 POST
My car turns over but will not start. It's a 2004 Hyundai Santa Fe 2.7L v6. I have replace spark plugs and put a new fuel pump in it and it still will not run. I cannot figure it out for nothing. I need help to fix it.
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Tuesday, March 12th, 2019 AT 8:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Welcome back:

If you have spark and tried starting fluid with no results, then either it is a timing issue or low compression. Or, you have a very weak spark. It should be a hot blue snapping spark. Did it even fire a couple times with starting fluid? Also, can you let me know how this issue came to be? Did it happen all at once? If you remove spark plugs, are they wet?

Let me know. Also, it's hard to tell, but it almost sounds like it is cranking really fast. If you brought this to me and it had spark and fuel, the first thing I would check is compression. It almost sounds like timing is an issue and a compression test would indicate that.

Here is a link that shows in general how it is done:

https://www.2carpros.com/articles/how-to-test-engine-compression

Here are the directions specific to your vehicle with the manufacturer's specs. The attached pictures correlate with these directions.

CHECKING COMPRESSION PRESSURE
1. Before checking the engine compression, check the engine oil level. Also check that the starter motor and battery are all in normal operating condition.
2. Start the engine and wait until the engine coolant temperature reaches 80 - 95°C (176 - 205°F).
3. Stop the engine and disconnect the spark plug cables.
4. Remove the spark plugs.
5. Crank the engine to remove any foreign material in the cylinders.
6. Insert the compression gauge into the spark plug hole.
7. Depress the accelerator pedal to open the throttle fully.

See Picture 1

8. Crank the engine and read the gauge.

Standard value .................... 1,200 kPa (170 psi)
Limit .................... 1,050 kPa (149 psi)

9. Repeat steps 6 to 8 for all cylinders, making sure that the pressure difference for each of the cylinders is within the specified limit.

Limit .................... Max. 100 kPa (14 psi) between cylinders

10. If a cylinder's compression or pressure differential is outside the specification, add a small amount of oil through the spark plug hole, and repeat steps 6 to 9.
1) If the addition of oil causes the compression to rise, it is possible that the piston ring is worn.
2) If the compression remains the same, valve seizure, poor valve seating or a compression leak in the cylinder head gasket are all possible causes.

Tightening torque
Spark plug .................... 20 - 30 Nm (14 - 22 ft. lbs.)

__________________________________

Let me know what you find or if you have other questions. Remember, if you have fuel and spark, either timing or low compression are suspects.

Take care,
Joe
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Wednesday, March 13th, 2019 AT 3:54 PM
Tiny
RACEN2U
  • MEMBER
  • 1 POST
  • 2004 HYUNDAI SANTA FE
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 106,000 MILES
If it sets for a while, 18-20 hours, it will not start. Everything works, all light alternator, everything it just wont turn over. I have to turn the key off and wait 20 seconds and try again. It never takes more then three try's to get it started.
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Saturday, January 2nd, 2021 AT 9:01 AM (Merged)
Tiny
OIDAVEY
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  • 0 POST
Lets run the codes first it sounds like the engine coolant temperature sensor is shorting out but to be sure lets run down this guide.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down these guides and report back.
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Saturday, January 2nd, 2021 AT 9:01 AM (Merged)
Tiny
KRISTENLEE
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  • 0 POST
I found out my computer was bad got a rebuilt unit all fixed! Cost me $187.00
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Saturday, January 2nd, 2021 AT 9:01 AM (Merged)
Tiny
DWIGHT1958
  • MEMBER
  • 6 POSTS
  • 2004 HYUNDAI SANTA FE
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 192,000 MILES
Car quit running. Won't start back will crank. But no spark or fuel.
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Saturday, January 2nd, 2021 AT 9:05 AM (Merged)
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Let's start with checking for codes. Then let me know how we found no spark or fuel.

With just this info, the most likely cause is the crank sensor. Here is a guide that will run through this. Let me know the testing you have done so far and if you have a signal coming from the CKP sensor.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
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Saturday, January 2nd, 2021 AT 9:05 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
  • 2004 HYUNDAI SANTA FE
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 198,000 MILES
Brought to me with crank no start. Found the ignition condenser power lead grounded to block.(As in condenser cut off and stake on installed to end of wire). Replaced condenser, but still no fire. Thinking it may have blown the ignition control modual.
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Saturday, January 2nd, 2021 AT 9:05 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Hello,

Lets start by running the codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what you find.

Cheers, Ken
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Saturday, January 2nd, 2021 AT 9:05 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
Will get scanner and run
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
Bought code reader ran it only code that I got was for fuel temp
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
That will do it. Here is the sensor location so you can get it replaced to see what happens. As long as you are there turn the ignition key tot he on position to see if you hear the pump working for about 5 seconds.

It under the back seat under the tap door

Check out the diagrams (Below)

Please let us know what happens.

Cheers, Ken
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
Would the fuel temp sencer give me a crank no start
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
Fuel pump is running
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Yes it will if it is shorted out. Try unplugging it to see if it runs.
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
Decided to go ahead and replace ICM fixed the crank no start. After it ran cleared codes doing good thanks
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
JOHN L WILLIAMS
  • MEMBER
  • 8 POSTS
This started as a starter replacement the camshaft sensor plug and ignition coil condenser were HEAT baked and the condenser lead was grounded. I traced the condenser lead back and it joins with the ignition control module on the power side. It must have burned out the ICM when the condenser lead was grounded
I replaced the ICM. Ignition coil condenser and camshaft position wire plug fixed the crank no start problem
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Saturday, January 2nd, 2021 AT 9:06 AM (Merged)

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