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 Jason Your Own Question

Jason
Jason, TOYOTA MASTER DIAGNOSTIC TECHNICIAN
Category: Toyota
Satisfied Customers: 598
Experience:  ASE MASTER CERT. 15 YRS EXP.
Type Your Toyota Question Here...
Jason is online now
A new question is answered every 9 seconds

Toyota Camry: I have an 1998 Camry w/ 2.2. New timing belt,

Customer Question

I have an 1998 Camry w/ 2.2. New timing belt, pulley and water pump installed. There was a rattle that seems to come form under timing belt cover that has not gone away with the change. Ran the engine w/out PS and AC or alternator and rattle is still there so they are out of the loop. The rattle occurs only when the engine is cold and only in the 1600-2000 rpm range. No heat shields seem to be loose. Could the noise be an oil pump? There are 160K on the engine.
Submitted: 1 year ago.
Category: Toyota
Expert:  Skyvisions replied 1 year ago.

Thank you for choosing JustAnswer and allowing me to help you resolve your Toyota questions!

Was it there before the belt change?

Customer: replied 1 year ago.
Yes, and there was no leakage from the oil pump seal when the timing belt was removed. I have seen similar posts that reference a heat shield on the back of the engine. If that is the case I have not been able to locate the shield in question.
Expert:  Skyvisions replied 1 year ago.
Does the noise get worse or louder if you power brake it in D or R? Does the noise go away completely when cold?
Customer: replied 1 year ago.
The noise seems to be consistent when idling, driving or braking in the given RPM range. When warm the noise goes away. There might still be a small rattle, but it is not obvious above the normal engine idle sound.
Expert:  Skyvisions replied 1 year ago.
This engine was notorious for counter balance shaft noise especially with higher miles and it normally quiets down after warm up then there have problems with carbon knock. Did you do a decarbon soak on the top end.?
Customer: replied 1 year ago.
I have not had the top end apart other than to replace Valve cover gasket at 140K. I have never had a single noticeable knock.

Is there a way to isolate that the noise is the counter balance shaft? What is the remedy to the noise?
Expert:  Skyvisions replied 1 year ago.
IF it is the counter balance shafts then the shims between the balance shaft assembly and the block have to be change to obtain the correct clearance to stop the back lash rattle. The shims are select fit. The oil pan has to come off and the back lash measured. The top end has to be soaked with decarbon to make sure it is not carbon build up. I have to step out for a few hours if you need anything else just reply and I will get back to you this evening.
Customer: replied 1 year ago.
Is there a problem with letting the counter balance shafts rattle? If you bother changing the set out, and clearing out carbon, what other items (i.e. oil pump) should be replaced?
Expert:  Skyvisions replied 1 year ago.
The counterbalance shaft backlash rattle generally does not create a problem. Unfortunately noises are very difficult to diagnose in this format unless you can get some type of audio recording and post it here is difficult to say for certain what exactly is making the noise. When doing a D carbon on the top and after soaking the tops of the Pistons for an hour rotate the engine around so that the other two Pistons are the top of the cylinder to allow them to soak the carbon on the head also. Once you crank the engine over and push all of the cleaner out of the cylinder spark plug holes and get the engine running it will then become necessary to change the oil. The oil pump pumps rarely are an issue. Depending on the mileage you can also confuse carbon knock with low and Rod knock due to excessive wear and the bearings.
Customer: replied 1 year ago.
The noise is located right at the point of the shafts and is consistent under all loads so it could not be carbon. Also, the location of the noise makes rod bearings unlikely unless cylinder #1 was totally trashed and plug wear and such do not indicate an issue.
Expert:  Skyvisions replied 1 year ago.
Can you get an audio file of the noise?
Customer: replied 1 year ago.
I will try to get one. There was a posting on Youtube of a Camry with the same noise, but a totally different diagnosis.
Expert:  Skyvisions replied 1 year ago.
Do you have the link?
Customer: replied 1 year ago.

http://www.youtube.com/watch?v=5OMFr34ijUI&feature=related


 


The rattle sounds the same, almost as if gears were out of sync. Thats why i thought it would be the oil pump. My noise seems to go away easier than the one on the video.

Expert:  Skyvisions replied 1 year ago.
It got busy in the shop. I will review the video and get back to you with some thoughts.
Expert:  Skyvisions replied 1 year ago.
That video was P/S pump noise. You said the noise was there prior to the belt and I assume you checked the P/S fluid. You are certain the noise is from the front of the engine ie passenger side?
Customer: replied 1 year ago.

Yes, had the noise with no belts attached. Wen running I can feel the vibration in the skirt of the block behind the oil pump. That is where the front bolt for the counter balance shafts is.


Have you run these engines without the counter balance with the oil supply for the unit plugged?

Expert:  Skyvisions replied 1 year ago.
No have not tried that. Not sure where to go with this with out being there hands on.
Expert:  Jason replied 1 year ago.

The timing belt is too loose and smacking against the cover, remove the upper cover and run it, the noise will be gone. Tighten the t-belt more

Customer: replied 1 year ago.

It is worth another shot. Snugged the pulley up as much as possible earlier.


I will try again.


 

Expert:  Jason replied 1 year ago.

How did it turn out?

 

Customer: replied 1 year ago.

I picked up a new set of tensioning springs and idlers last night. I will install them later this morning. It should resolve whether the belt tension is the issue. I will respond as soon as that is completed.

Expert:  Jason replied 1 year ago.

On the tensioner. I take a pry bar and gently push on the metal tab that has the small hole for the spring, to tighten. If you over do it, it'll whine, if you under do it, it'll rattle.

once you are done, throw the upper cover on and run it for a minute, and make sure its quiet before you reassemble it.

Customer: replied 1 year ago.

New spring, made sure adjuster was all the way out and it is as quiet as could be.


 


Thanks much for saving me from my typical path of overdoing every project.


 


I will close the call out.

Expert:  Jason replied 1 year ago.
Im glad you got it, got luck to you..
Jason, TOYOTA MASTER DIAGNOSTIC TECHNICIAN
Category: Toyota
Satisfied Customers: 598
Experience: ASE MASTER CERT. 15 YRS EXP.
Jason and 3 other Toyota 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:

 
 
 
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
< Last | Next >
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
  • 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
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    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)

    Auto Technician

    Satisfied Customers:

    278
    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:

    167
    ASE & Bosch Master Tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    Toyota Technician

    Satisfied Customers:

    1132
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/CA/caprio23/2014-4-30_201741_20121205122939.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    373
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    9
    Toyota tech. ASE Certified Technician
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    11403
    Toyota Master Diagnostic
  • http://ww2.justanswer.com/uploads/genchigenbutsu/2009-05-09_003043_cimg16431.jpg Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

    3425
    Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine