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engine rattle on Bmw 645ci maybe Hydraulic Lifters

  • 27-03-2011 1:23pm
    #1
    whoknows21
    Closed Accounts Posts: 10 ✭


    I have a rattle in my engine (Bmw 645ci) when i start it up from cold it is vastly reduced almost completly gone most of the time when the engine warms up and a good Bmw indy near me reckons it is the hydraulic lifters at fault and that he has seen it a few times

    anyone come across this before on any car does it sound plausable ??
    Tagged:


Comments

  • #2
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    How old is the car and what milage?

    Did he check the oil pressure?

    Does it sound like just a could of bad lifters or are all them noisy?

    It's not unknown for the lifters to make noise on start up. Some times just one or two have gone bad and can be replaced...


  • #3
    whoknows21
    Closed Accounts Posts: 10 ✭whoknows21


    no it was just conversation it wasnt in with him he just had a quick listen to it it has been in with him in the past though
    its a 2004 with 93000 miles

    is it a big job to change them ???


  • #4
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    I assume its like other bmws, It's not a massive job, but does take a little time.

    They need to turn the engine to the correct spot, use a tool to compress the valve spring, remove the rocker arm, change out lifter, replace rocker arm, allow valve spring to release. This has to be done for each lifter that is faulty...


  • #5
    whoknows21
    Closed Accounts Posts: 10 ✭whoknows21


    thanks DublinDilbert :)


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