Question about 2004 Chevrolet Impala

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Lifter noise when on start up then goes away after few minutes

This car has 48,000 miles on it never been drove hard and the oil changed every 3,000 miles or before do you think there was a problem with this engine or a recall ? it is a v-6 motor also 2004 year chev impala. Larry

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These engines did make a little rattle when first cranked. Are you running an ac/delco filter? i have seen a lot of engines make noise from cheap oil filters. they will let all the oil drain out so when you start it has to fill the filter back up before getting oil to engine

Posted on Nov 11, 2008

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Pound ticking noise when my 99 durango starts goes away after the engine warms up


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A ticking sound on a 06 ford f150 super crew 5.4L


Ticking sound could be coming from a Coil-on-Plug, or a pcv valve, or (hope it's not) a valve lifter which could be sticking. Sticking lifter noise often disappears when rpm's change, or the noise comes & goes. try changing the motor oil & filter right after adding an Engine-Flush Treatment to the motor oil, running the engine for 10 minutes at idle with treatment added to the oil, then draining the oil & changing filter while oil is still very hot. That last part is very important, so be careful not to burn your hands - be careful. -- The sticking lifter is a likely cause if motor oil has not been changed at frequent intervals in the past (every 3-4K miles) -- dirty oil causes sticking lifters.

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Have you tried flushing the engine crank case? You may have sludge clogging the valve lifter oil pressure ports. Get a can of Berrymans brand Chemtool, add it to a cold engine crankcase oil and run it for 5 miles or so, then change the oil and see if the noise level improves. Some tapping noise on cold start is normal and not a sign of any problem. If the noise goes away in my opinion I'd just do the flush of the system and then leave it alone.

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2003 dodge ram has light tick for a minute at cold start then goes away


The 'light tick' is most probably a valve lifter. The valve lifters in the engine are hydraulic, and are pressurized by the engine's oil pump.
When the engine gets some mileage, say 60 or 70 thousand miles or more, the engine is just not as tight as it once was. What happens is that the lifter loses its pressure when the engine is not running, because there is some wear. When you start the engine, the lifter takes a few moments to pressurize, and makers a ticking noise until it does. The 'ticking' is the sound of the valve being hit by the push rod, which is being pushed by the lifter. Once the lifter is pressurized, the 'ticking' sound stops. This is a very common thing for engines, it will eventually happen to nearly every one.
Sometimes, thin, old oil can cause this. If you have not changed the oil/filter in a while, you should do it now.

This is nothing to really worry about right now, but it is a sign of engine wear. Just be sure to run the proper oil in the engine, and do all the proper maintenance.

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If you have good oil pressure, a few things come to mind, first it could be a loose rocker, secound it could be a woren or broken rocker, third it could be a weak or calaps lifter. If it sounds like its lower in the engine like around the oil pan it could be a rod or maine problem. But you say its a ticking noise witch leads me to believe its a valve trane problem.

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ACURA TL 2007 HEAVY NOISE IN THE ENGINE FOR 4 5


There are two mechanical noises you will hear from an engine, lifter noise, wrist pin slap, and rod bearing noise. The only one that will go away, if at all, with engine warm-up, is lifter noise. All assuming of course, the noise is coming from the engine, and not any of the externally mounted accessories.
Have the oil changed, and continue to change every 2000-3000 miles with a good quality oil, maybe the lifter will clear itself. If it does, maintain the oil changes for the next few changes to assure it is cleaning out.
You might also try adding 1-2 pints Berrymen's Chemtool to the oil 200-300 miles before you plan to change the oil.

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I would have you oil pressure checked. The oil pump or bearings could be going out. The lifter noise on this car usually will go away faster then 5 minutes. I think the noise is lasting a little to long.

Mar 15, 2009 | 1995 Buick Riviera

1 Answer

Tapping noise


A tapping sound could be lifter tick, or rod knock... if it goes away, what you have is lifter tick, check your oil, low oil makes it worse.

Oil pumps up the hydraulic lash adjusters in your valve covers, at lower RPMs, the oil pressure is lower and will not fully pressurize them. Try holding your rpm at about 3500 or so with the car in neutral (parked) and see if it goes away, it should.

In later years (I think starting in 97 or so) mitsu started using a larger bore so called "third gen" lash adjuster. They don't tick as much, but they still do at times.

The good news, lash adjusters are not THAT hard to replace, figure a set of 24 will run you less than 150 in parts.

The better news, it doesn't hurt anything, as long as you can live with the sound, there isn't any reason to change them.

Good luck,
Scott
Iceman_ii on 3si.org

Sep 23, 2008 | 1994 Mitsubishi 3000GT

1 Answer

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it sounds like your losing oil pressure you might want to get it checked dont believe the pressure guage on the dash they arent right all the time

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