Engine turns over but wont start?

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi and thanks for using 2CarPros.com.

If you smell fuel, chances are there is no spark to the plugs. Here is a link which shows how to check:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

If you find there is no spark, the most common problem is a crankshaft position sensor. Here are links which discuss symptoms as well as how to replace one:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Let me know if this helps.

Take care,
Joe
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Monday, October 5th, 2020 AT 11:19 AM (Merged)
Tiny
110000
  • MEMBER
  • 1 POST
  • 2004 NISSAN X-TRAIL
  • 2.0L
  • 4 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
Hie my wife drives a nissan xtail 2004 a/t recently the car wont start for 3 days now and we thought the radio we changed before caused the problem and we did put back the original radio but still it didnt start, the plugs wont fire the starter cranks but the engine wont fire we checked the fuses all are well fuel full now we dont what to do please help.
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Monday, October 5th, 2020 AT 11:20 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
This sounds like you have a crankshaft angle sensor that has gone out. Here is a guide that will show you what you are in for when changing the sensor.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

and

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

Here are some diagrams that will show you what the job is like on your car.

You will need to lift the car to change it becasue it is up on the bell housing of the transmission. Here is a guide to help you do it safely.

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Please let us know what happens so it will help others.

Cheers, Ken
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Monday, October 5th, 2020 AT 11:20 AM (Merged)
Tiny
EMMANUEL KAWALA
  • MEMBER
  • 1 POST
  • 2004 NISSAN X-TRAIL
  • 124,000 MILES
It was boiling so they changed the gasket and did skimming cylinder head it started quite well. We drove it and parked the following morning trying to start it failed only to discover that there is no spark on the coils. What could be the problem?
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Monday, October 5th, 2020 AT 11:20 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check crank angle sensor is plugged in and tight. Also, run a scan just to see if there are any codes set.
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Monday, October 5th, 2020 AT 11:20 AM (Merged)
Tiny
RENEE L
  • ADMIN
  • 1,260 POSTS
Hello EMMANUEL KAWALA,

I am sending you a link to an article that features written step by step instructions and pictures explaining how to scan for codes yourself. Also, I have included a link to our YouTube channel with a how to video on code scanning.

This is applicable even if your check engine light is not on.

Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

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

https://youtu.be/YV3TRZwer8k

Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,
Renee

Admin
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Monday, October 5th, 2020 AT 11:20 AM (Merged)
Tiny
EMMANUEL KAWALA
  • MEMBER
  • 1 POST
Hi, am trying to diagnose using OBDII/EOBD diagnosing equipment and it's failing to connect saying linking error what could be the problem.
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Monday, October 5th, 2020 AT 11:20 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like you have a fuse out here is a wiring diagrams so show you how the ALDL is wires and which fuses power it.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below)

Please let us know what happens.

Cheers, Ken
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Monday, October 5th, 2020 AT 11:20 AM (Merged)

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