How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Roy Your Own Question

Roy
Roy, ASE Certified Technician
Category: Nissan
Satisfied Customers: 5451
Experience:  Nissan Master technician
8127795
Type Your Nissan Question Here...
Roy is online now
A new question is answered every 9 seconds

2002 Nissan Altima: It recently started leaking oil..block..exhaust

Resolved Question:

I have a 2002 Nissan Altima. It recently started leaking oil from the transmission housing where it meets the block. This drips onto the exhaust and cause strong odors that get pulled into the car. I have replaced the oil cooler gasket and had the rear main seal and oil pan gasket replaced. The leak is still there. What other items can I check to help find the leak. I ran the engine and looked for leaks around the valve covers and did not see anything.
Submitted: 2 years ago.
Category: Nissan
Expert:  Roy replied 2 years ago.

Roy :

HI!

Roy :

Is the oil engine oil or transmission oil ?

Roy :

you could have a axle seal leaking or front transmission seal leakng

Customer: It is a dark brown color. The oil was just changed today when they finished the rear seal. It does not appear red or smell like transmission fluid.
Customer: I also had the oil changed around the 10th of this month and they checked the tranny fluid and did not mention it was low.
Roy :

ok I would have the mechanic that installed your rear main seal recheck it then, it could still be leaking

Customer: It appears to be coming from behind the dust cover on the transmission housing primarily when running.
Roy :

do you know if they removed the oil pan when seal was replaced , this is the correct way to do it , there is also a seal under rear main for oil pan seal.

Customer: The oil pan is on the passenger side of the car and the rear seal that they replaced is on the drivers side. They did replace the oil pan gasket during the process. The seal was a two part seal.
Roy :

ok good

Roy :

I would think if nor rear main leakng you could have a valve cover leaking and oil could go into bell housing of transmission

Roy :

I would still have them check it , to make sure after they just repaired your leaks

Customer: I will take it back to them in the morning for another check. I ran the car and checked for leaks on the drivers side of the valve covers. I did not see any oil leaking out on that side, yet at the same time I could see oil dripping under the car.
Roy :

I would do that then have them show you what they see, just to make sure you see where it is coming from

Customer: Currently the dripping on the exhaust prevents me from running the air on anything that does not use recirc.
Customer: Thanks. I was running out of ideas. Short of the valve covers I could not think of any other seals or gaskets that would allow oil to drip out at this location.
Roy :

that can smell bad

Customer: At least none that haven't been replaced.
Roy :

could be axle seal or or axle boot torn also grease on exhaust

Roy :

does not take much to make smell on exhaust

Customer: Except I can see it dripping from the bell housing. I'll just have to have them put it on the lift and verify their work and if it's not the seal to show me where it is.
Roy :

that would be you best thing to do

Customer: Again thanks. Hopefully they get it figured out. They stated one day for repair and had it for two. Afraid to see what happens next.
Roy :

Ok your welcome and good luck ,Thank you ROY!

Roy, ASE Certified Technician
Category: Nissan
Satisfied Customers: 5451
Experience: Nissan Master technician
Roy and 7 other Nissan Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was in trouble with an electrical issue with my brand new Nissan. I frantically went online trying to find help and luckily I found your site. I reached a NISSAN tech named RIP. He was absolutely tremendous and helped me work through the issue. What a pro! cjaz Lexington, KY
< Last | Next >
  • I was in trouble with an electrical issue with my brand new Nissan. I frantically went online trying to find help and luckily I found your site. I reached a NISSAN tech named RIP. He was absolutely tremendous and helped me work through the issue. What a pro! cjaz Lexington, KY
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
 
 
 

Meet The Experts:

 
 
 
  • Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    446
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
< Last | Next >
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    446
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    306
    ASE Master Automobile Technician with over 18 years exp. in this field.
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    171
    34 years of automotive Repair
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris(aka-Moose)'s Avatar

    Chris(aka-Moose)

    Nissan Technician

    Satisfied Customers:

    165
    16 years of experience
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    127
    ASE & Bosch master tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/BA/baddad1/2013-8-30_131413_11848761610058140852271553042976n.64x64.jpg Mike V.'s Avatar

    Mike V.

    Nissan Technician

    Satisfied Customers:

    7443
    Nissan factory trained and Certified Subaru Technician.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    92
    Nissan Tech ASE certified technician