Engine Compression Problem

Avatar
ISENETC
  • MEMBER
  • 1 POST
I have a 1996 Nissan Altima with 189,000 miles on it. It is a 4 cylinder engine. The car regularly dies when it is idling or if it is going at below 30 mph.

I have taken it to numerous garages including at least 4 diagnostic tests all with different conclusions. I have had a districutor, a distributor cap and plugs replaced within the last 3 months.

The most recent is two very conlusions, one that the entire engine needs to be replaced because it has lost all its compression and the other that only one fuel injector needs to be replaced.

I have also been told that the engine compression can be revived by removing the spark plugs and pouring a 1/2 cup of oil into (I am not a mechanic so I could be wrong on where it goes) the fuel injectors

Any thoughts?
Aug 3, 2007 at 1:09 PM
Advertisement
Avatar
SERVICE WRITER
  • ✓Experienced Mechanic
  • 9,123 POSTS
This is a cross section of an engine, different than yours, but the same for the purpose.


https://images.2carpros.com/forum/automotive_pictures/30961_ENGINE6500X491_1.jpg

The green area is what is getting compressed.


https://images.2carpros.com/forum/automotive_pictures/30961_compressed_1.jpg

By puttin oil in the cylinder at the spark plug,


https://images.2carpros.com/forum/automotive_pictures/30961_oilinplug_1.jpg

The compression will rise temporarily as it is sealing up the leakage...temporarily. Disregard this thought. Get the compression specs and post them.
Aug 3, 2007 at 1:29 PM
Add a reply
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.

Frequently Asked Problems for This Vehicle