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What causes lifters to make noise on 2.6 Caravelle?

Posted by Ntobe Mdlalose on

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Simon Atkinson

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Are you are referring to the Valve Lifters in the Engine? Is it a 'Machine gun' style noise as you rev the engine.
First check your engine oil level. Low oil levels can cause noise as the top end of the engine isn't getting enough oil. The most likely noise is the lifter (tappet) clearances need adjusting.

Posted on Jul 02, 2021

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Valve tap cause

Most engines now use hydraulic lifters and they can leak a little, this causes space between then lifter and the push rod. This results in a tapping noise that goes away when they get warm or fill back up.
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My 2ltr V6 Vitara has a rattle. Top End noise, it rattles like noisy tappets on start up and gets less as the engine warms up (around five minutes) then it almost stops. So far I have pulled the rocker...

this is not SOLIDS engine, there is no LASH setting, !
the engine has a chain, and a set of hydraulic bucket valve lifters.
the chain can be bad or any lifter, can be dirty and collalpesd.
when the engine is dead and no oil pressure the lifters are normally collapsed, when you start the engine. oil pressure does 2 things
all lifters pump up, and clearance goes to zero. (no noise)
then the cam tensionor, pumps up (they fail) and chain noise ends.
some noise is ok , cold start, but most end after a minute or 2.
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ever read the manual? its here.
use a stethoscope to find out 1 thing , which is it the chain or lifters making that noise.
ive even runs engine with the valve covers off (messy , use a blanket to catch oil flying) to find the true cause.......

read the 2.5L here. its close. (mech. parts)
read the Alldata virtual FSM.

http://www.scantool.net/software/alldata-diy-1-month-subscription.html
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How is your oil level? is the oil light on or if you have an oil pressure guage what is your oil pressure.
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I have a 2003 gmc Sierra half ton 4.8 liter that has a knock that sounds like lifters

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1999 MITSUBISHI COLT RODEO V6 HYDRAULIC LIFTERS IS MAKING A NOISE.WHAT CAN I DO?IT IS LIKE A TAPPING SOUND.

First check your oil, and change it if necessary. Low oil will cause the lifters to tap. I wouild recommend adding some high milage oil treatment, like Slick 50. If your oil is good and full, the lifters may be damaged. You can take a quart of transmission fluid or diesel fuel to the gasoline. It will cause it to smoke a little but it may free up sticky lifters. If that doesn't work, you probably have damage to your lifters.
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Will intake gasket leak make the lifters tic when first starting

I dont think and intake gasket will cause lifter noise. It may cause a rough idle and or a miss at idle on cold start up . as the engine warms up the miss or rough idle will decrease . As for the lifter noise this could be cause by the lifter bleeding down or poor oil presure . On your model of engine there is no adjustment on the rocker arms for lifter noise . They are a 0 lash type .
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Engine Tapping

Could be a lifter.. The lifters are what opens & closes the valves.. Oil passes through a tube in each lifter.. If the tube is clogged the oil wont get through and cause the tapping noise..
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depends, how long between oil changes, how many miles, try and engine flush, sometimes debrise adn sludge will cause a lifter to stick and not move freely causing the tapping noise you hear, if this doesn't fix or quiet the problem it may be to far gone, but if you really love the car get a tear down manual and go to work....put aside a weekend and about 500 dollars it'll be a job
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