Bad head gasket or bad head due to violent shudder
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Thread: Bad head gasket or bad head due to violent shudder

  1. #1
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    Exclamation Bad head gasket or bad head due to violent shudder

    Car is a 2013 CT200, one month ago had the EGR and manifold replaced due to shudder and shaking on start up. $1,100 and one month later the shudder is back.....VIOLENT shudder. Tech found codes for misfires. Diagnosis is either a bad head gasket or bad head that is allowing coolant into firing chamber.....when plugs fire it is put out by coolant in head, causing misfire and the VIOLENT shudder. Anyone ever hear of this? Seems to me if the shudder was there a month ago, that may have caused the head gasket to break or the head to crack. Estimate to repair is $4,500. WHASSUP?


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  3. #2
    Senior Member stormchaser's Avatar
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    Don't believe that at all.
    Very common occurrence on CT,Prius and Auris (UK).
    None have been due to head gasket failure. This engine doesn't suffer from head gasket problems and I've never read of any either.
    Questions:
    Does the engine suffer from coolant loss?
    Are you having to keep topping it up?
    Is there any oil in the water and water in the oil?
    Which cylinders are misfiring ?
    Mine had this problem last winter. I cleaned out the EGR valve and pipe and used a fuel injector cleaner. The car hasn't suffered with it since. It was also a really scary bad shuddering too.
    Sorry for the questions but I would investigate it more as you don't want to be paying for things that aren't required.
    Good luck.


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  4. #3
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    Not to hijack this thread but I have the same symptoms with my 2012 CT200h but without the replacement EGR and manifold. I recognise the shudder and shaking on start up and sometimes it stutters while accelerating. My local Lexus dealer states that it's caused by a bad head gasket probably due to stressing the engine while being cold.

    I would like to compare notes if you don't mind.
    Does the engine suffer from coolant loss? Yes.
    Are you having to keep topping it up? Yes.
    Is there any oil in the water and water in the oil? No.
    Which cylinders are misfiring ? Unknown.

    The quote I got from Lexus stated at a rate of € 130 / $147 per hour:
    6 hours to open the engine / diagnose.
    6 hours to replace the head gasket

    Total: € 1500 / ~ $1700

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  6. #4
    Senior Member stormchaser's Avatar
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    Still in disbelief about this.
    Engine stress whilst cold. That's utter rubbish. I'm yet to see one of these engines with a head gasket problem.
    Unfortunately in the U.K. There was never a recall for the EGR valve or manifold.


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  7. #5
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    Here is the answer; The head gasket was bad, water got into combustion chamber and caused VIOLENT misfire. Lexus changed the head gasket. Problem solved. Lexus did provide a $1500 one time good will cost sharing (my 3rd Lexus) and I paid $861.01. Regardless how senior member others are on this forum, they don't know everything. BELIEVE IT!

  8. #6
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    Wow dougvarney, what an attitude...

    I have to wait till next week for an update on the matter.

  9. #7
    Senior Member stormchaser's Avatar
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    I work for Lexus in the UK and we haven't yet had any CT failures of any kind.


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  10. #8
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    I had my head gasket fail at about 130k miles. Had lexus replace head gasket, 10k miles later it threw a rod through the side of the engine. I had also never heard of any problems with these engine prior to my issues.

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