Intermittent code P0304?

Tiny
LESANDJANICE BUCKLEY
  • MEMBER
  • 2009 NISSAN X-TRAIL
  • 2.5L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 205,000 MILES
When cold or under load, plugs and coils changed but still gives pending fault?
Thursday, March 6th, 2025 AT 11:44 PM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,679 POSTS
Lets do a compression test for that cylinder and if okay I would swap out the fuel injector. Please use this guide to help:

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

This guide can help as well:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Here is how to change out the fuel injector. Check out the images (below). Please let us know what happens.
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Friday, March 7th, 2025 AT 11:12 AM
Tiny
LESANDJANICE BUCKLEY
  • MEMBER
  • 3 POSTS
  • 2009 NISSAN X-TRAIL
  • 2.5L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 205,000 MILES
Have had a compression test, 10 PSI less than others. Fault applies whether on LPG or petrol so injector not an issue. Cylinder 4 coil swapped with cylinder 3, plug 4 swapped with cylinder 1, to no effect. Will intermittent faulty cam or crank sensor cause this fault?
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Saturday, March 8th, 2025 AT 11:44 AM (Merged)
Tiny
KEN L
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I would remove the spark plug so make sure it is not cracked. I also have seen defective spark plugs as well, they look new but don't work.
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Saturday, March 8th, 2025 AT 11:47 AM
Tiny
LESANDJANICE BUCKLEY
  • MEMBER
  • 3 POSTS
Plug okay, please answer re sensors.
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Saturday, March 8th, 2025 AT 2:50 PM
Tiny
KEN L
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If the fuel injector and compression is okay the crankshaft sensor may cause this issue. They don't tell us where they are on this vehicle sorry, but I did find information on what to look for. Check out the images (below).
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Monday, March 10th, 2025 AT 9:01 AM

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