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Thread: Terrible noise - is it terminal????? HELP!!!!!

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    Default Terrible noise - is it terminal????? HELP!!!!!

    My Signum 2.2dti design auto has had a slight knocking noise coming over the past two days, which progressively got worse. It wasnt noticeable when ticking over, but as soon as gear selected, it sounded like a hammering noise coming from somewhere up front. No loss in power at all. no loss in fuel efficiency. No blue smoke. Just this horrible hammering metallic noise. I had noticed a few days earlier, when the gears changed there was occasionally a banging noise. I took the car to a local mechanic who said the turbo has blown (was replaced last year about 30k miles ago) and that was due to oil pressure problem. He says the noise is the Big end bearings and that i now need a new engine. The engine has done 166k miles,, and the gearbox was replaced 100k ago. I know for sure the CV boots need renewing. but has anyone got any other ideas?! He said do not drive the car, the engine may blow up!!!

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    Ex Vec-C Admin & Founder GARY3306's Avatar
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    It may well be big end bearings mate from how you describe it. As your mechanic says, if it is BE bearings, best not to use it as it may get interesting
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    Regular Member jonnybravo's Avatar
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    Vehicle : Signum


    Engine : 20 Dti


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    If your big end bearings are gone the knocking will get louder as you raise the revs,especially if the engine is under load.
    has the mechanic checked the turbo for failure or is he just guessing,if the turbo turbine has touched the body it may have broken a vane and entered the engine,if so the knocking could be the vane stuck on top of a piston and stricking the head when the piston tops
    eitherway the engine is unusable untill repaired
    Last edited by jonnybravo; 27th September 2010 at 20:09. Reason: add detail

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