Mazda

Mazda Repair Questions? Ask Mechanics for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mazda

Brought my 2008 Mazda CX-7 Grand Touring to have a timing

Customer Question
chain put in because he...
Brought my 2008 Mazda CX-7 Grand Touring to have a timing chain put in because he told me that it needed done. I picked the car up got down the road a couple miles it lost all power and blue smoke poured out. I had it towed down there, he had the car for 31 days before he called me down to tell me my engine was ruined. He come up with a couple scenarios that didn't have any truth to them. He claims now that a fuel injector went bad and that's what ruined my engine. I have sense had it towed to a another shop to have a new engine put in. He wants me for $800 to put all new fuel injectors because of what the other mechanic said. My question is is there a way to test them not being hooked up? And is it possible did a bad fuel injector could ruin my engine.? How can I prove he's telling the truth. Keeping the car for 31 days seem pretty shady to me and lying about other scenarios. I'm looking at $5,000 maybe more for for taking my car in for routine maintenance. What the car of shot me a code? Something I should know? Thank you Shelly
Submitted: 3 months ago.Category: Mazda
Show More
Show Less
Ask Your Own Mazda Question
Answered in 3 minutes by:
10/12/2017
Mazda Mechanic: internal88, Technician replied 3 months ago
internal88
internal88, Technician
Category: Mazda
Satisfied Customers: 2,644
Experience: Over 10 years of automotive experience and diagnostic is my specialty.
Verified

Hello, I'm Brandon-Mazda tech.

Sorry to hear this bad news.

The tech claimed the injector ruin your engine is totally lie. There is no possible way a failed injector or injectors would have ruined the engine.

A bad timing chain installation would have ruined the engine.

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Could you please explain this to me in detail. The mechanic who has it now said there are scenarios where this has happened with the interference engine. That it could melt a cylinder
Mazda Mechanic: internal88, Technician replied 3 months ago

The tech needs to run a fuel injection pressure test. How much was the PSI on the rail. He needs to provide the reading to you.
Without any pressure test reading they cannot prove the fuel injector were the problem.

Ask Your Own Mazda Question
Mazda Mechanic: internal88, Technician replied 3 months ago

Did he say one injector or all injectors were bad?

Ask Your Own Mazda Question
Customer reply replied 3 months ago
I need you to explain things to me a little more. Like I said the engine is a part and it's not hooked up is this a test you can do when they're just sitting there.? And in my previous question I asked if the car would have shot a code ? Could you please explain why this couldn't happen in technical terms I really need to know.
Mazda Mechanic: Gary, Technician replied 3 months ago
Gary
Gary, Technician
Category: Mazda
Satisfied Customers: 17,505
Experience: GM master tech for 15 years/ASE master tech for 20 years
Verified

new expert here

in rare instances and injector can damage an engine if it stuck on full fuel flow and filled that cylinder with fuel and cause a hydrolock issue and cause a piston or cylinder to melt or actually physically bend the piston rod

as for testing the injectors out of the engine there is no way to do that

the key to knowing if it was an injector or not is can you tell me exactly what they said failed in the engine ?

did a cylinders valves hit a piston and break the piston ?

Ask Your Own Mazda Question
Customer reply replied 3 months ago
I just spoke with my mechanic that has the car now the poor guys in the dark because it was brought to him torn apart so there's no way he could have checked them. He said it looks to him like there's a cut in the cylinder and a cut in the piston. Nothing is burned
Mazda Mechanic: Gary, Technician replied 3 months ago

that sounds like the timing chain failed or jumped and the valves hit the piston head not from a fuel injector at all

it really sounds like the timing chain job they did failed and caused this issue

an injector would not cause that type of damage to the cylinder wall and the piston head

if you have any questions please ask..i want to be sure you are 100 % satisfied with me here at Justanswer

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Ask Your Own Mazda Question
Customer reply replied 3 months ago
the cylinder would have been burnt if that was the case am I correct?
Mazda Mechanic: Gary, Technician replied 3 months ago

yes or the piston rod bent ..an injector would NOT cause physical cylinder damage just a valve hitting the piston would i am sorry to say

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Ask Your Own Mazda Question
Mazda Mechanic: Gary, Technician replied 3 months ago

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Ask Your Own Mazda Question
Customer reply replied 3 months ago
I would rate you excellent but I'm afraid once I do that I'm not going to be able to ask you anymore questions from what I'm seeing on my end and I do have more questions as I speak to my mechanic so I will write you when I'm all done thank you.
Mazda Mechanic: Gary, Technician replied 3 months ago

you can come back to this post any time for any follow up for free any time

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Wouldn't I have issues with the car prior to bringing it in to have the timing chain fixed if I had a clogged fuel injector?
Mazda Mechanic: Gary, Technician replied 3 months ago

yes that is correct

Ask Your Own Mazda Question
Customer reply replied 3 months ago
I will write you later today from my experience before being on here I couldn't ask any more questions after I rated. And I don't do well with computers so bare with me I will do it when I'm done thank you. What kind of issues would I have had if it was the fuel injection going bad?
Mazda Mechanic: Gary, Technician replied 3 months ago

it would have been misfiring and usually setting codes and shaking at idle

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Would it have sent me a code for the timing chain being put in wrong?
Mazda Mechanic: Gary, Technician replied 3 months ago

the injector yes usually a code as for the timing chain when they fail or jump it happens to quick to send a code

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Hello Gary could you please explain to me why the car did not want to start when I picked it up? I only drove a couple miles and that's when I lost all power and blue smoke poured out. Could I have driven that far?
Mazda Mechanic: Gary, Technician replied 3 months ago

the odds are the timing was off causing it to be hard to start

that is when the valves hit the pistons and caused the engine to break

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Could I have driven that far?
Mazda Mechanic: Gary, Technician replied 3 months ago

if the chain was loose yes then the chain jumped and caused these issues

Ask Your Own Mazda Question
Customer reply replied 3 months ago
did they not lined the teeth up properly or did they put it in To loose?
Mazda Mechanic: Gary, Technician replied 3 months ago

that is correct

for the valve to hit the piston the timing chain that they replaced was put on wrong and caused this issue

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Please explain to me how they could have put it on wrong? Was it too loose? They could have got all the teeth right but installed it wrong is this what I'm hearing?
Mazda Mechanic: Gary, Technician replied 3 months ago

it would have had to be too loose for it to jump and cause the damage and when it was hard to start when you picked it up the timing chain was loose causing it to start hard

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Is there a certain amount of time you need to replace your fuel injectors on my Mazda CX-7 or is it just something that you know when it needs replaced?
Mazda Mechanic: Gary, Technician replied 3 months ago

only when one acts up of not sending in fuel or too much will it need to be replaced

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Here's my dilemma the mechanic that has the car now putting in the new engine wants to replace all the fuel injectors for $800 because they are off the car and we cannot test them. I believe it was the timing chain installed wrong it ruined my engine not the fuel injector. If I have him put the old fuel injectors on and we test them and they're okay. My worry in the future is if one goes it'll ruin my engine is that true?
Mazda Mechanic: Gary, Technician replied 3 months ago

if one is bad it COULD hydrolock the engine

have them put the old injectors in it then test them if they test fine then do not replace them

Ask Your Own Mazda Question
Customer reply replied 3 months ago
What is hydrolock do to the engine?
Mazda Mechanic: Gary, Technician replied 3 months ago

when an injector send in way to much fuel and fills the cylinder with gas then when the piston comes up it can not push the fuel in the cylinder and damages the connecting rod

again from how that engine looks it was not an injector issue that caused your engine failure

Ask Your Own Mazda Question
Customer reply replied 3 months ago
Could you please explain to me why all four cylinders didn't go and just one?
Mazda Mechanic: Gary, Technician replied 3 months ago

that happened to be the cylinder that the valves were closer too

its luck of the draw with what cylinder would hit

Ask Your Own Mazda Question
Customer reply replied 3 months ago
I was told because it was in Failure condition that for sure only one would go what does that mean?
Mazda Mechanic: Gary, Technician replied 3 months ago

that usually one cylinder will hit the valves first

Ask Your Own Mazda Question
Ask Gary Your Own Question
Gary
Gary
Gary, Technician
Category: Mazda
Satisfied Customers: 17,505
17,505 Satisfied Customers
Experience: GM master tech for 15 years/ASE master tech for 20 years

Gary is online now

A new question is answered every 9 seconds

How JustAnswer works:

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

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 PElm 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.

PhilMarysville, 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.

CharlesWalnut 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!

SueCharleston, 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.

JimCastleberry, 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

< Previous | Next >

Meet the Experts:

Drew

Drew

Super Mazda Tech.

2,188 satisfied customers

19 yrs. experience. Mazda Senior Certified Tech, with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.

Chris (aka- Moose)

Chris (aka- Moose)

Technician

867 satisfied customers

16 years of experience

mazdamaster577

mazdamaster577

Master Technician

691 satisfied customers

mazda master/shop foreman for 15 years.

George H.

George H.

ASE Certified Technician

457 satisfied customers

15+Years

Ron Z.

Ron Z.

- Mazda Tech -

399 satisfied customers

18+yrs experience. State Inspector and Mazda Diagnostics

Mike Kelly

Mike Kelly

Mazda Mechanic

273 satisfied customers

17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.

Mazda Ed

Mazda Ed

ASE Certified Technician

264 satisfied customers

ASE Certified Mazda Master Technician

< Previous | Next >

Related Mazda Questions
The front driver front door is giving me problems. After
The front driver front door is giving me problems. After getting out of car and using fob to lock the doors, all the doors lock automatically except the driver front door, this door needs to be locked… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
867 satisfied customers
I replaced my radio and all of a sudden no power to my radio
i replaced my radio and all of a sudden no power to my radio and no dome lights … read more
Mechanic01
Mechanic01
1,716 satisfied customers
Need to change out both axles for this car and axle seals.
Need to change out both axles for this car and axle seals. Need both driver and passenger sides front CV axles and axle seals PART NUMBERS for this car and also repair information or drawings. Anythin… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
I have a 2003 miata. it's been sitting for a couple months
I have a 2003 miata. it's been sitting for a couple months and when I tried to start it it was dead. I put a battery charger on it and it has a full charge. no lights or anything … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
My 2009 Mazda 6 has a locked steering wheel and won't
My 2009 Mazda 6 has a locked steering wheel and won't start.the only 2 symbols that are out is the red car with key, approximately every 2seconds and a red key with a line through it. How do I get it … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
867 satisfied customers
I just replaced the rear rotors and pads on my daughters
I just replaced the rear rotors and pads on my daughters 2010 mazda 3. Everything went fine until I tried to drive it. The brakes seem to be pocked... although I jacked it up and removed the tires and… read more
Mechanic01
Mechanic01
1,716 satisfied customers
I have a 2004 Mazda RX8 with automatic transmission. The car
I have a 2004 Mazda RX8 with automatic transmission. The car cranks but will not start. I noticed that I am getting a P0336 error code and replaced the eccentric shaft position sensor as well as the b… read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
I have 2013 Mazda cx 5 that I have not been able to start in
I have 2013 Mazda cx 5 that I have not been able to start in 4 weeks. Replaced car battery and started fine. Next time I tried to start it nothing happened. Key light on dash red and starter button am… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
867 satisfied customers
My 2013 CX-5 won't start and the battery is not dead. The
My 2013 CX-5 won't start and the battery is not dead. The Security Indicator light continues to flash after I turn off the ignition. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have a rough idle on my Mazda b4000 & occasionally the
I have a rough idle on my Mazda b4000 & occasionally the check engine lite will come on for a few minutes & then go off; what is causing this? Also my brake & ABS lite is on constantly even though the… read more
jim
jim
Vocational, Technical or Trade Scho
702 satisfied customers
I was looking at your post about p1525 code and p1540 for
I was looking at your post about p1525 code and p1540 for mazda millennia and you were recommending replacing ABV Vent Solenoid. Should I replace ABV Vacuum Solenoid as well?… read more
Todd M
Todd M
Owner
ASE Certification
1,487 satisfied customers
I have Mazda cx9 9 2008 looking for. module control, Know
I have Mazda cx9 9 2008 looking for.flasher module control … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
2010 cx9 touring drivers side low beam won't work. Took to
2010 cx9 touring drivers side low beam won't work. Took to dealership and they want $1200.00 for a replacement headlight unit. There is no damage to the light unit. Couldn't they just replace the wiri… read more
Todd M
Todd M
Owner
ASE Certification
1,487 satisfied customers
We installed a new battery on my car and accidentally
Hello, we installed a new battery on my car and accidentally installed it the wrong way (reversed the poles) … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
I don't know a of a lot about cars but I have a 2006 Mazda
Hi I don't know a hell of a lot about cars but I have a 2006 Mazda MPV and it was running fine then I left for work an the wife called me to say there was a puddle green black sludge on the drive wher… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
867 satisfied customers
My 2001 Mazda MPV's remote door lock fob quit working the
My 2001 Mazda MPV's remote door lock fob quit working the other day. I replaced the battery and it still won't work. I did flip the battery so to make sure I didn't have it in upside down. Is there a … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,436 satisfied customers
I have many miles on it, 267,000 and coming back from a
I have many miles on it, 267,000 and coming back from a trick last night I noticed smoke coming from the left side of the hood. It got more and more smokey and just as I got near my house, I pulled ov… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a 2008 Mazda 3; last week I "bumped" the car in front
I have a 2008 Mazda 3; last week I "bumped" the car in front of me. Broke some plastic, but not much more. My turn signals don't "click" inside when I use them now. Any idea what I need to do to fix t… read more
Mechanic01
Mechanic01
1,716 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x