Tuesday, July 23, 2013

2004 Nissan Altima Using Oil and Running Rough

We had a 2004 Nissan Altima come into the shop the other day.  The customer complaint was he was needing to add oil to it frequently; as much as 2 quarts every other day!  He also had a complaint for the engine running roughly.

When I checked the oil level, it was barely touching the stick.  First things first, fill it up with oil before doing any checks.  Once the oil was full (and we checked the coolant as well, it was good) we started the engine.  We noticed some oily places under the hood and inspected for any leaks.  We noticed some small leaks here and there.

Next, I went to the back of the vehicle to have a look at the exhaust pipes.  I was pretty sure, based on how much oil the customer was adding, the problem was an internal one.  I was pretty confident it was going to put out a bit of smoke, indicating a problem with the rings in the cylinders.

I had asked the customer if he had noticed any smoke.  He said he had seen some, but really wasn't sure.
We revved the RPM a bit and as we did smoke started coming from the pipes.  It may be hard to see, but the smoke is visible in the picture below (whitish/grayish in color).


 The more we increased the RPM, the more the smoke boiled out.



When we snapped the throttle to red line, WOT (Wide Open Throttle) the smoke thickened even more (my camera wasn't quick enough to capture it) and oil spit out from the exhaust pipes.


The black specs on the floor in the picture above is oil from the pipes.  Below, I got some of the discharged oil on my finger to show.


Long story short, this vehicle is in need of an overhaul or engine replacement.