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 Tim Mohr Your Own Question

Tim Mohr
Tim Mohr, ase master
Category: Mazda
Satisfied Customers: 13157
Experience:  30 yrs experience in Foriegn and Domestic, Gas and Diesel
17454363
Type Your Mazda Question Here...
Tim Mohr is online now
A new question is answered every 9 seconds

no coolant loss, and 165 to 180 psi compression worst to best cylinder

Customer Question

Sudden whitish smoke LOTS of it, no coolant loss, and 165 to 180 PSI compression worst to best cylinder.
Submitted: 3 years ago.
Category: Mazda
Expert:  Tim Mohr replied 3 years ago.
Hi, my name is Tim, if there is alot of white smoke, then this IS antifrezze burning, you may not see the loss of coolant yet, but it will, you need to have the heasgaskets checked, the best way to do this is with a chemical test on the cooling system, the parts houses sell this test kit for about 25 dollars, and it will test for exhaust gasses in the coolant, if there are gasses in the coolant then the headgaskest are blown,Tim
Customer: replied 3 years ago.

It's not antifreeze, to further test this I drained the coolant and replaced with water.

 

Also, the oil pressure light used to flicker at idle, then it would come on full at idle, then it would come on even with engine revs, but not be on when the engine was cold, and now it is on all the time. This change would occur with the smoke, the smoke lingers for a long period of time in the yard/street. I've not driven it enough to know if it's losing oil, since it is smoking way too much to drive. The smoke used to be intermittent. Meaning that sometimes it would smoke upon startup and for a few minutes, and sometimes it would not. Now it smokes all the time, right from start up, engine sounds the same, it had good power, just a ton of smoke.

Expert:  Tim Mohr replied 3 years ago.
ok, if the smoke lingers then its oil, if there are no knocking noises in themotor and the compression is good, then its most likely valve guides that are bad, if it were rings, the compression would be lower, so if you are 100% sure its oil burning, then the valve guides are the suspect, its about the only thing that will cause this much smoke and not cause a drivability problem,tim

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 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
< Last | Next >
  • 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
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • Drew

    Super Mazda Tech.

    Satisfied Customers:

    2176
    #1 rated Mazda technician. 17 yrs. experience as a shop owner. Mazda Certified with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
< Last | Next >
  • http://ww2.justanswer.com/uploads/supermazdatech/2010-8-24_54425_Self_Portrait.jpg Drew's Avatar

    Drew

    Super Mazda Tech.

    Satisfied Customers:

    2176
    #1 rated Mazda technician. 17 yrs. experience as a shop owner. Mazda Certified with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
  • http://ww2.justanswer.com/uploads/MA/mazdamaster577/2012-6-7_13242_IM001017.64x64.JPG mazdamaster577's Avatar

    mazdamaster577

    Master Technician

    Satisfied Customers:

    633
    mazda master/shop foreman for 15 years.
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    354
    15+Years
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    Mazda Mechanic

    Satisfied Customers:

    269
    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/maddogtech/2008-12-13_185836_ed1.JPG Mazda Ed's Avatar

    Mazda Ed

    ASE Certified Technician

    Satisfied Customers:

    264
    ASE Certified Mazda Master Technician
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Technician

    Satisfied Customers:

    247
    16 years of experience
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Mazda Tech -

    Satisfied Customers:

    232
    18+yrs experience. State Inspector and Mazda Diagnostics
 
 
 
Chat Now With A Mazda Mechanic
Tim Mohr
Tim Mohr
Mazda Mechanic
13157 Satisfied Customers
30 yrs experience in Foriegn and Domestic, Gas and Diesel