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Posted on Jan 02, 2017
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
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
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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