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1969 chevelle ss big block 396 engine problem/ new rebiult 396 fresh start up less than 20 minutes into running time engine developed a slight tick at top of engine. solutions tried re-adjust valves [twice],confirmed that engine bldr used correct valve springs, cam has 584 lift exs it side, thought at first it could be hydrolyc lifters not pumped up all parts new, any ideas

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  • 95 Answers

Cam bearings maybe ????

Posted on Dec 05, 2012


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Posted on Jan 02, 2017

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SOURCE: valve/lifter tick and loss of power

what this means is either one or more of your lifters is begining to fail. they are hydraulic and what that means is that oil from the pan flows into them which allows them to expand. seeing that it's not a constant problem rules out being a cam lobe that is worn out. a l;oss of power is due to an itermittant miss due to the fact that the lifter does'nt open the valve on your intake side to allow fuel to go to that cylinder. your going to have to replace the lifters and because of that a top end rebuild is required.

Posted on May 17, 2009

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SOURCE: loud ticking sound from engine

Check the valve clearance and then replace the valve seal.

Posted on Jun 09, 2009

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SOURCE: 2.7 99 dodge intrepid skips when warm

one hydrolic lifter taps after I just spend 2,000 dollers to rebuild the heads they put all new parts on everything. I whant to know if the single hydrolice lifters can be replaced without pulling the head back off. could it be replaced by just pulling the valve cover 2002 dogde entrepid

Posted on Oct 04, 2009

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SOURCE: Ticking noise on KA24E engine

change the oil and filter and add some lucos oil treatment you may have a lifter sticking

Posted on Oct 26, 2009

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SOURCE: Hi! So I have

I think you are right that it is NOT the water pump. They usually make more of a whistling sound when the bearing are failing
The valve lifter may be sticking, but that would produce a ticking noise that would rise and fall with acceleration/engine speed. It wouldn't likely come and go under power, ie.going up hill. Can you hear the ticking when you have the hood up? If you vehicle in gear and foot on brake, engine under load does it make the sound? If so, try and isolate location. Use a very long screwdriver as a stethoscope and listen at area around valve cover, Stay away from plug wires and moving parts.
The sound may also be caused by "pinging" or engine knock due to bad fuel or timing problem. That would be evident under hard acceleration or load such as going up hill. That sound is more like a rattling though.
I would not worry about oil pressure unless it is significant drop.
I wish there was a way that you could video and submit. There are so many other things that it "could" be.
Let me know if you have any other info to provide and what you find out.
Please rate this answer by checking the "HANDS" below. Thank j

Posted on Feb 08, 2011

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I have a1968 chevelle with a 396 engine i recently changed the oil in it and went to syntheced oil and my lifters seem realy loud whould this be the problem

Since you replaced a valve spring you know how.. I would replace them all since one broke.. I think this car is a hydrolic lifter.. you may not have adjusted them correctky.. possibly buy new lifters, and springts from Summit racing or Jegs.. and replace them all .. this is not a very costly repair if you are doing the labor. When you have it apart look at the top of the valve that hits the rocker are.. you are looking for wear and cracks.. Look at each rocker arm looking for the same.. Please post a comment and let us know what you find..

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