Engine only firing on two cylinders

2006 NISSAN SENTRA
115,000 MILES
Avatar
ANGELA GRESHAM
  • MEMBER
  • 1 POST
It's only firing on 2 cylinders. Replaced almost everything. Plugs, wires, battery, alternator, ECM.
Jun 16, 2021 at 9:18 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

Did this happen all at once? Have you scanned for diagnostic trouble codes? Here is a quick video showing how that is done:

https://youtu.be/YV3TRZwer8k

If you have replaced everything, then we could have a fuel injector problem or engine compression issue. Here are two links that explain how to check both:

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

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Also, let me know if you have checked fuel pressure and for a plugged catalytic converter.

Take care,

Joe
Jun 17, 2021 at 3:40 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.