Engine Knocking

[Anonymous]

This morning coming to work I planted my foot down on the throttle as I accelerated away from a round about. Then I heard a rumbling form the engine! Ouch - I think that I have a damaged valve based on the fact that the noise is constant even idling and the knocking gets louder / more frequent with revs. I had a look and it could maybe be coming from below the heat shield but I think it is the main block. Any one any idea how much a main dealer will charge me to replace a valve? Can it be done by taking the cover off only or the whole head?

Thanks for your advice!

[Anonymous]

If its a knocking, instead of a tapping, sure its the valve? When I had a "knpcking" going on on my Mk1, turned out to be a big end squared off!!!

I would get it checked before assuming. Not casting aspurtions on your knowledge either, just better to be safe than sorry and wouldn't want you to incurr any more damage.........

[Anonymous]

Really hope it's not the big end! But the term knocking could be my use of english as it is as much a tap as a knock - also it sounds to be coming from the top of the engine as well - Though I took no chances and have left it with Toyota to see what's what just awaiting the dreaded phone call to tell me it'll cost a grand  s:-( :-( s:-(

[Anonymous]

Fair enough. I hope for your sake it isn't the big end either! But the sound does travel and it kinda starts as a "tapping" noise, so definately worth MrT having a good check over. Fingers crossed it isn't anything too serious.........

Keep us posted......

[Liz]

Isn't the tapping normally the Vee belt tensioner?

[Anonymous]

Mine tends to go under acceleration. According to what was said above, his doesnt. I could be wrong though.......  s:? :? s:?

[aaronjb]

I wouldn't discount that idea totally - mine knocked loudly on accelleration when the tensioner went, but it did still knock at idle (most noticable when stopping at MaccyD's..  s:oops: :oops: s:oops:  )..

Coincidentally I'm fairly sure mine started knocking after a long, relatively hard, drive back from Wales..