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 david Your Own Question

david
david, Auto Service Technician
Category: Car
Satisfied Customers: 1499
Experience:  Certified Master Technician,Certified in diesel & gasoline engines
533087
Type Your Car Question Here...
david is online now
A new question is answered every 9 seconds

1981 Mazda: fuel pump..sedan..fuel line..surging and backfiring

Customer Question

I need to know where the fuel pump is on a 1981 Mazda sedan. Also can't find a fuel line filter . Filter seems to be blocked and causing surging and backfiring when I start the engine. If I pump the accelorator, it keeps gong very roughly, and the backfire happems. This started out driving and when engine was warm/hot, it got me home, but when I start it now, I would't want to risk trying to drive to a garage as is. Neaerest is a few K's away, and it is Easter hols. Can you offer any help please?
Stuk
Submitted: 4 years ago.
Category: Car
Expert:  david replied 4 years ago.
Hi thank you for your question hope this helps .

The 626 electric fuel pump is located under the floor of the car in front of the fuel tank.

The RX-7 electric fuel pump is mounted near the fuel tank and access to the pump is gained by removing the rear floor mat and the storage compartment behind the driver's seat.

The fuel filter is mounted under vehicle, driver side, below seating area, near fuel tank, mounted on frame rail in fuel line

Hope this helps
Good luck

Edited by david on 4/2/2010 at 10:52 AM EST
Customer: replied 4 years ago.
Thanks David, the detail of my car is a bit thin I admit, but, wife just found the registration papers- It is a 4 cylinder 1981 Mazda 929 model. It has an engine number which might help with I.D of the series.
It is LA 4M5877129. I hope this enabled you to help me with this David. Thanks.
Expert:  david replied 4 years ago.
OK Mazda 81 929 used both a manual or an electric fuel pump depending on were it was made and many other things.

The electric fuel pump is inside the fuel tank.

The manual fuel pump is bolted to the side of the engine and runs off a cam gear.

The fuel filter is mounted under vehicle, driver side, below seating area, near fuel tank, mounted on frame rail in fuel line.

Edited by david on 4/2/2010 at 11:32 AM EST
david, Auto Service Technician
Category: Car
Satisfied Customers: 1499
Experience: Certified Master Technician,Certified in diesel & gasoline engines
david and 20 other Car Specialists are ready to help you
Customer: replied 4 years ago.
Have found position of fuel pump and filter in the Mazda 929 (1981) Your information was of no use. For future reference you need to know the pump and filter are concealed in a vented metal housing bolted to underside of spare tyre tray. All accessible from beneath tyre tray. I
would appreciate a credit for $16 (AUD) paid. I couldn't check your information last night in the dark, but today I was able to perform a thorough search.
Expert:  david replied 4 years ago.
Sorry that my info was no help. But i am happy you found it.

I have put in for a refund for your total payed hope you have a good day.

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
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< Last | Next >
  • 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:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician
 
 
 
Chat Now With An Auto Mechanic
david
david
Auto Mechanic
1499 Satisfied Customers
Certified Master Technician,Certified in diesel & gasoline engines