06 with multiple error codes the dreaded "mis-fires" - Page 2
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This is a discussion on 06 with multiple error codes the dreaded "mis-fires" within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; You had misfires on all cylinders and the diagnosis was the valve lifters? Something sounds fishy. Beamed at your face ...

  1. #16
    zax
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    You had misfires on all cylinders and the diagnosis was the valve lifters?

    Something sounds fishy.

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  3. #17
    Registered User Subie Doo's Avatar
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    Not really. The valve lifters (or "buckets") that cover the valve stem/spring/retainer ride in a depression in the cylinder head, sort of like a piston. If a lifter sticks, it will not allow the valve to close all the way, leading to a misfire. They don't stick every time, just once in a while. It's possible to have sticky lifters on multiple valves, consequently I saw misfires on every cylinder. He replaced four out of eight lifters. The car now runs like it should. Makes perfect sense.

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    zax
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    Quote Originally Posted by Subie Doo View Post
    Not really. The valve lifters (or "buckets") that cover the valve stem/spring/retainer ride in a depression in the cylinder head, sort of like a piston. If a lifter sticks, it will not allow the valve to close all the way, leading to a misfire. They don't stick every time, just once in a while. It's possible to have sticky lifters on multiple valves, consequently I saw misfires on every cylinder. He replaced four out of eight lifters. The car now runs like it should. Makes perfect sense.
    Whatever. Not sure how EVERY lifter had a problem.


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    Registered User silvercookie's Avatar
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    Do you change your oil every 30,000 miles?

  6. #20
    Registered User Subie Doo's Avatar
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    Every lifter DIDN'T have a problem. Four of eight exhaust lifters did.

    And I change my oil every 5000 miles. (30,000!!! What you think I'm NUTS??)

  7. #21
    Registered User silvercookie's Avatar
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    Actually the service is every 3k. not 5k.

    But if you have sticky exhaust lifters it is because of your poor maintenance schedule and excessive oil gunk build up.

    Feel bad for your car.

  8. #22
    zax
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    Quote Originally Posted by silvercookie View Post
    Actually the service is every 3k. not 5k.

    But if you have sticky exhaust lifters it is because of your poor maintenance schedule and excessive oil gunk build up.

    Feel bad for your car.
    Perhaps, but my oil analysis came back with an A-OK on a 5000 mile intervals. I change every 3000-4500 miles.
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  9. #23
    Registered User Subie Doo's Avatar
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    And I'm running synthetic. Perhaps I should switch to a better synthetic...... But I've been pretty religious on the oil changes. Fer crissake, it's not like these things are Ferrari's or something.
    Last edited by Subie Doo; 03-30-2013 at 09:25 AM.

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