Nissan - Sentra :: Slight Exhaust-type Smell And White Smoke
Feb 18, 2012
2000 Nissan Sentra with 105,000 miles. Runs great. All scheduled maintenance from the beginning. Grandma owned until I got a hold of it 2 years ago.
The beginning...
The car has had a slight exhaust-type smell for about a month. I thought it was either an exhaust leak or a small oil leak. I overlooked this as it was running great and I only drive to and from work at a total of 5 miles/day. I was going to be driving it about 20 miles so I figured I should just double check the oil.
Before my drive, I checked the oil and the dipstick said I had absolutely no oil. Backstory: I got my oil changed about 2 months ago and they broke the dipstick. They replaced it with a new one. I drove a few blocks to get oil. I purchased 2 quarts filled it up. I drove off and about a half a block later it started smoking bad. White smoke canvassing the whole street.
I turned around and went back to the auto parts store. I had a guy come out and look at it and he was baffled. The only thing he though was that it had run completely dry and it need more oil. We put 2 more quarts of oil in it (4 now) and it did not register at all on the dip-stick. A small oil leak was discovered coming from the head gasket (that was the smell). Also, there was no milkiness under the oil cap indicating
I decided to drive it back to work to leave it overnight. It smoked like hell and I made it about 4 blocks before it died. I pushed it the rest of the way and it stayed overnight.
The next day, I spoke to a mechanic friend. The only thing he could think of was that the dipstick was not the right size and it wasn’t reading any oil. The oil I put in was extra and the car was burning it off. He suggested I drain out all the oil and put 4 quarts in.
I drained all the oil but only 4 quarts came out. I added 3 quarts of oil and checked it again. Not it was reading about 10 times more oil than what I was supposed to have.
My mechanic friend said to start it up and the oil level should go down. I did start it up and the oil level did go down but it was reading about 5 times more oil than it should have. That is where I am at at this point. Hopefully it isn't a blown head gasket or piston.
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1: P0431, warm-up catalyst efficiency bank 2 below threshold pending
2: P0431, warm-up catalyst efficiency bank 2 below threshold confirmed
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I'm as clueless you can get with cars. Do I need to be worried?
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I started my car up this morning for work and I noticed it sounded a little different almost like a little more gurgle then usual. I walked behind the car and saw white smoke coming from the left exhaust. The smoke wasn't incredibly white like a cloud but was definitely noticeable i think it smelt like gas or oil I'm not sure (stuffy nose got me some allergies) . After about 10 ish seconds everything was back to normal. What could this be if anything? Hopefully nothing tho.
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