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 ckarate2 Your Own Question

ckarate2
ckarate2, ASE Certified Technician
Category: Car
Satisfied Customers: 116
Experience:  ase master. dodge chrysler jeep master certified. over 250 factory training schools
Type Your Car Question Here...
ckarate2 is online now
A new question is answered every 9 seconds

SAAB 9-2x Aero: Turbo..the timing belt, tensioner..spark plugs

Resolved Question:

I have a SAAB 9-2x Aero (WRX) with the 2.0L Turbo motor and 110,000 miles. (I was already planning to change the timing belt, tensioner, idler pullies, etc.) The car sat for several days (35 degrees outside) and when I tried to start it, the engine turned over like the spark plugs were out. I thought that the tensioner may have lost tension and allowed the belt to jump. The engine never started, it just turned over. I took the timing belt covers off to inspect the situation. I also pulled the spark plugs since I needed to change them anyway. With a wrench on the crankshaft I can only turn the engine over about 340 - 345 degrees before it has resistance.
Submitted: 5 years ago.
Category: Car
Expert:  ckarate2 replied 5 years ago.

the bad news is it sounds like the timing belt jumped time. the good news is you have the cover off to inspect....

the really bad news is the resistance you feel is the valves hitting the pistons due to it being and interference engine..

 

if you fell the resistance turning by hand it is almost a guarantee that it has bent some valve in the cylinder head when it jumped trying to start the motor.....

 

you can turn the camshaft 15 deg. and than try to turn the crank again to see if you have resistance.

 

i would pull the valve cover and look at all the valves to see how many valve are sit lower than the rest and that is a sure fire telltale of bent valves and a rough idea on how many are bent....

 

what will have to be done is have the head pulled and a valve job and replace all bent valves and reinstalled and retimed with new timing belt kit including idlers and tensioners..

 

let me know if i can help

 

good luck

chris

Customer: replied 5 years ago.
This is a horizontal 4 cyl with 4 cams... with a SOHC 4 cyl, 15 degrees of cam rotation may help with the evaluation of the problem, but with a 4 cam engine ???
Expert:  ckarate2 replied 5 years ago.

yes, the 15 deg turning of the cams was just to get the valve train into a different location to clear the pistons so you can get the crank in time than bring the cams back into time and set the timing belt back on and in time........

 

what has happened is when it jumped time the camshafts being out of time or sync with the crankshaft... by turning the cams you get them out of the way of the pistons so you can turn the crankshaft a full 360 deg. than you know there is not interference with the pistons.. set the crankshaft on tdc and than bring the camshafts back into time and set the timeing belt..

 

than turn the motor over 2 complete times to make sure there is not interference with the piston to valves and than i would check compression and if a valve is bent you will see it now with the comression test. if all cylinders are roughly 150 lbs of comression you have no bent valves. if you have a cyl at 50 lbs than you have bent valves on that cylinder... check all 4 cylinders to see the compression and this will tell you with certinty

that you have or dont have bent valves in the cyl. head........

 

i hope that is more clear.......

let me know if i can assist any further..

chris

ckarate2, ASE Certified Technician
Category: Car
Satisfied Customers: 116
Experience: ase master. dodge chrysler jeep master certified. over 250 factory training schools
ckarate2 and 9 other Car 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 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