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displaying posts 1 to 4 of 4
| Author | Subject: Rattle/knock when revving |
 jimmerpug
Newbie  Location: Tiverton Registered: 22 May 2008 Posts: 13 Status: Offline |
Post #1
A friends 6 starts and idles fine but when blippimg the throttle it starts to rattle from the top end quite badly. All compression figures are 190 plus on all cylinders. Plugs were all tight and look fine. The engine had been sat up for a while before being installed from another car. New filter and 10/40 semi synthetic oil was put in. Could it be a stuck tappet? or am i just putting off the inevitable bent valve conclusion?Any help much appreciated |
 Posted 26th Sep 2009 at 23:08
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oecken
Seasoned Pro  Location: Mt Cook, New Zealand Registered: 17 Feb 2009 Posts: 4,751 Status: Offline |
Post #2
dont know about the tappets, but check the top engine mount, prone to cracking badley, which makes a knock noise when revving changing gear etc... worth a look for free  also search for top engine mount, some of the threads have pic to explain better. ________________________________________  Ex-Black 6  - Speed has never killed anyone, suddenly becoming stationary... That's what gets you. |
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Posted 26th Sep 2009 at 23:13
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jimmerpug
Newbie Location: Tiverton Registered: 22 May 2008 Posts: 13 Status: Offline |
Post #3
oecken wrote: dont know about the tappets, but check the top engine mount, prone to cracking badley, which makes a knock noise when revving changing gear etc... worth a look for free also search for top engine mount, some of the threads have pic to explain better. I dont think its the engine mount its deffinatly top end from head/cam area |
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Posted 26th Sep 2009 at 23:15
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bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,752 Status: Offline |
Post #4
sounds like it could be bottom end bud sometimes sounds like its coming from the top Only thing to do is whip the head off an have a look  |
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Posted 26th Sep 2009 at 23:19
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