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engine knock

To: Triumphs <triumphs@autox.team.net>
Subject: engine knock
From: charles dubois <duboistr3@yahoo.com>
Date: Wed, 30 Jul 2003 12:51:41 -0700 (PDT)
Hello,
 
I hope I can get some advice about the current problem I have with my TR3.
 
When it ran, a couple of weeks ago, it had a very heavy knocking at idle which 
would basically go away as I accererated.  It would return immediately once I 
took my foot of the gas.
 
I have dropped the pan and replaced the rod bearings. 
 
Currently I have the plugs out and the rocker arm assembly off.  I can turn it 
over by hand and all seems fine.  It turns over w/o any obvious noise or 
knocking. 
 
BUT once I put the rocker arm assembly back on and adjust the clearances, I get 
a very distinct knock as I turn it over by hand. It seems to come from the 
camshaft but I can not say that for sure.
 
Also I noticed that once I put the rocker arm assembly back on, the distributor 
shaft does not go around as smoothly as it did when the rocker arm shaft was 
off.  
 
You can actually watch the rotor kind of get stuck and then there will be the 
knock and the rotor jumps forward.  I thought it had something to do with the 
way the distributor shaft was messing with the camshaft but this only occurs 
when the rocker arm asssembly is in place.
 
Thanks for any thoughts
 
 


Charlie DuBois - 
Poughkeepsie,NY
58 TR3 - 31682E

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