Question about Toyota Corolla

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Burning oil-no visible leak. Seems as though engine is loosing pressure. sputtering from exhaust pipe. No smoke coming from pipe except on occassions when you hear a rattle and the car loose pressure then a puf of white smoke comes out. this only happens every once in a while. Check engine lite is flashing

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  • photo7 Jul 29, 2008

    We will be taking the car to a Japaneese Auto Center/Specialisy.

    The dealership is estimayting between $4500 -$5500 for a replacing the engine and converter. Dealerships are usually a bit high.



    Thanks for your assistance. You were very helpful

  • Anonymous Mar 15, 2014

    Car shakes and rattles upon start and you have to floor it just to get it to move while in gear. I let it run for about 20 minutes but no improvement

  • Anonymous Mar 25, 2014

    the car shakes when idling and I hear a cycling **** coming from the exhaustion pipe

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  • Master
  • 6,966 Answers

Hi,

For some reason the Live Session froze. Our apologies for any inconvenience. Please find below the last part of my posts in case you were not able to view them.
photo7 says:
what about the piston rings

Benimur says:
that could be checked with a compression tester at your dealer

Benimur says:
so for the moment course of action would include: compression test
dye to determine where the oil went, if no trace found then it could be assumed was burned; change the catalyctic converter, it went as a direct result of oil in the exhaust system

Benimur says:
some remedial/temporary workaround includes installation of an aftermarket oil cooler with its own fan; maintain a lower engine temperature by removing the thermostat (not applicable to cold regions) and wiring the radiator fan to continously work.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 28, 2008

  • Louie  Role
    Louie Role Jul 29, 2008

    Hi again,



    I was notified of the additional comments in our Live Session. Appreciate the update and I understand the disconnect.



    To your concerns:

    So what causes the oil to burn like that - most likely worn piston rings; another possibility are valve seals;

    How do we prevent it? - it could no longer be prevented since the problem is already there, if you should so decide to overhaul or replace the engine, prevention would then be applicable and you could try decreasing the time between oil change, adding an oil cooler, improve the overall engine cooling system to lower the operating temperature;

    If we change the converter do we just wait till that one get cloged again and replace it - unfortunately if the problem with the oil burning is not corrected, then the new catalyctic converter would also go bad some time in the future.



    P420-Catalytic Converter - pls see above
    P0304 Cylinder 4 misfire - since changing coil pack is not corrective, you may need to check the high tension/sparkplug wires. In some instances, re-routing the wire might help.



    oil consumption test- consuming oil through engine/piston rings burning in converter clogging it - this just confirms what we have discussed.



    Your options then are rather limited; have the engine overhauled or have it replaced. You may have to consider if the repair/replacement is economically reasonable and then explore other options.



    Cheers.

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