DeTomaso Mailing List: October 97, Message #31
     



From: 	"Paul Timko" <TheDrol@classic.msn.com>

Subject: Ticking Sound

Date: 	Wed, 1 Oct 1997 16:43:00 +0000



Okay, so my car is drivable again.  It isn't quite running right, it has a 

lack of power.  I believe this is due to the vacuum secondaries not opening 

yet.  But the real question is the ticking sound.  At all engine speeds I hear 

a ticking sound.  Normally I would associate this with the lifters.  I have 

hydraulic lifters and they should have taken up this slack.  I except the 

sound to disappear shortly after starting the car, when the oil pressure fills 

the lifers properly.  Well, it doesn't.  Since then, I have removed the valve 

covers (not as simple now that the engine is the car).  I don't have any slack 

between any of the pushrods and the corresponding rocker arm.  The ticking is 

definitely proportional to engine speed.  My question is: Is it possible I am 

hearing the valve closing?  I checked the pre-load of the lifters before 

assembling the engine and replaced 9 pushrods with some that were .035" 

shorter.  This gives me preloads between 0.030" and 0.045". 



Any other ideas?



Thanks

Paul #9270