Tappety Tap Tap

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paulW
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Location: Winchester

Re: Tappety Tap Tap

Post by paulW » Mon May 11, 2009 10:40 am

P1060079.jpg
Belt looks ok, and no loose or missing bolts, so fingers crossed the problem is not in here.
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fd
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Re: Tappety Tap Tap

Post by fd » Mon May 11, 2009 11:34 am

Check the crank pulley bolt is tight . . .

Fd
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paulW
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Re: Tappety Tap Tap

Post by paulW » Mon May 11, 2009 11:38 am

fd wrote:Check the crank pulley bolt is tight . . .

Fd
I've put it all back together again now... :roll:

thanks. :thumbsup
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fd
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Re: Tappety Tap Tap

Post by fd » Mon May 11, 2009 11:43 am

You only need to take the undertray off to check it . . . they make a ticking noise sometimes when loose, eventually ending in catastrophic failure . . . put it on drive on ramps, in 5th gear with a helper in the car pushing the footbrake and check the bolt . . . if it's not that then great . . . if it is then you're living on borrowed time at best . . . you can do it on a jack if you're feeling wreckless . . . I tightened one up a KH for someone that way . . .

Fd
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paulW
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Re: Tappety Tap Tap

Post by paulW » Mon May 11, 2009 11:58 am

must read posts properly....you said Crank...I read Cam...easy mistake when you are looking at a photo of cam pulleys. :oops:

Crank pulley is the one that drives the alternator, right?
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robin
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Re: Tappety Tap Tap

Post by robin » Mon May 11, 2009 1:08 pm

Correct, the one that drives the alternator - as Fd says, if the pulley has been running loose you must replace the bolt - it should be at 220Nm IIRC - more than 200 anyway - the pulley is very heavy and if it's been riding loose on the bolt, it will have been hammering it; sooner or later the bolt will fail.

Cheers,
Robin
I is in your loomz nibblin ur wirez
#bemoretut
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alicrozier
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Re: Tappety Tap Tap

Post by alicrozier » Mon May 11, 2009 1:37 pm

Yup, I actually tightened that bolt on that car at KH last year after the crank pully fell off in the pitlane...
(rattle and alt light at the hairpin and managed to dive in!)
One nice chap (Stan Bernard's mechanic) cut down a socket for me. :thumbsup

...different engine though so can't be my dodgy spannering. :D
All characters appearing in this post are fictitious. Any resemblance to real persons, living or dead, is purely coincidental.
Any references to laptimes, speed or driving on the public highway are purely for dramatic effect.
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kerryxeg
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Re: Tappety Tap Tap

Post by kerryxeg » Wed May 13, 2009 9:30 am

I had what sounds like a similar problem a few years ago, with a horrible intermittant engine noise which came and went and seemed to be rev related. After a little investigation, it turned out to be the alloy spark plug cover which was not bolted down tight enough. The bolts needed to warm up enough to stretch and the rattle started.

Worth a check if you've not already thought of it.

Kerry
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paulW
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Re: Tappety Tap Tap

Post by paulW » Wed May 13, 2009 8:00 pm

Thanks, still not tracked the problem down, so all ideas welcome :D ...another couple of hundred miles done and not reoccured yet.
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meatball
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Re: Tappety Tap Tap

Post by meatball » Wed May 13, 2009 10:29 pm

Is it the noise the stereo makes when turned down?
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