Vehicle & Technical > Discovery

Knocking noise

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craigiow:
ok cheers ,  will check the exhaust out first,

might be a stupid question but could i remove the exhaust and start it up to see if the rattle is then gone ?

muddydisco:
Tappets loose or possible lift pump arm

craigiow:
just had the tappets adjusted,

is lift pump easy to replace ?

SteveGoodz:

--- Quote from: craigiow on February 14, 2008, 21:44:39 ---just had the tappets adjusted,

is lift pump easy to replace ?



--- End quote ---

You'll get a good idea if it's the tappets (or not) by removing the oil filler ... if the noise gets really louder then it's likely to be a top end rattle.

If you can hang on until the last week in July I'll be in Sandown on holiday and can take a look for you  :grin:

Range Rover Blues:
As said it's not easy to diagnose a knock via the internet, but a couple fo interesting things that have cropped unb in the forums recently include a valve stem cap going AWOL and causing a heavy tappet noise, more of a knock than a tap.

The of course there's broken valve springs and the snapped rocker shaft which caused a bit of noise.

If the knocking is heavy and low down then crank shaft or big ends, it's not unheard of for a bearing liner to go AWOL too :-o

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