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The hydraulics have become very noisy after 10 hrs of work, they used to whir now they screech. i am told it is the oil going through a valve,is this correct and how do I get it back to how i bought it, nice and quiet.

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  • jchriswi Nov 18, 2009

    I meant the machine has only worked 10 hrs in total over a period of 2 months not 10 hours continuous work. The noise is noticable the moment you switch the machine on. How do we fix it? would a thicker oil be better?

  • jchriswi Nov 18, 2009

    i am referring to 10 hrs of total work over a period of 2 months. the noise is there the moment the machine is turned on.There is no sign of a leak. Can I use a thicker oil if so what.

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Many times these hydrolics start making funny noise when the oil level drops down, same principle with a car steering's hydrolic..when the oil level gets low they screech.Check the oil level and see if it needs topped up.Hope this helps.

Posted on Nov 18, 2009

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Oil may be the cause of the problem. Oil expands during heating and at 10hrs of work this is definitely possible. I would advise a quick inspection of the system, for leaks or loose parts. Expansion of oil may cause it to escape from loose clamps/crimps on the hoses or at other parts. The noise may come from loss of pressure due to the reaction of oil. Check your oil seals as well. Check always for visible sign of wear. Other than that is you may have to check for dirt that may have entered the system which may contribute to the noise.

Posted on Nov 18, 2009

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A noisy engine


low oil pressure, wrong oil filter, worn hydraulic lifters , worn rockers at valve stem ends
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Why does the initial cold start on my2.5L 1996 subaruhave noisy hydraulic lifters


Noise lifters on a 2.5 engine of the first generation are an unusuak problem; these engines are known to have "piston slap", which can sound fairly similar to noisy lifters. I owned a Forester with those symptoms and drove the car for more than 3 years without doing anything about it. The only real cure would be an engine rebiuld, which is , in most cases, not worth the effort, especially since most of the "stricken" cars continue to work without any problems for a long time.

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My Audi a3 has got aloud ticking noise coming from engine once it gets worm


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What causes the lifters to click for a few minutes then they my not click for 3 or 4 days


Your lifters are the hydraulic type. Inside the lifter is a small piston that is driven by engine oil pressure. As the lifter gets older, a small amount of residue forms inside that is more sticky when cold than it is when warm. That prevents the piston to move freely until it gets warm. The piston takes up slack between the cam and valves, so when it's stuck, the valves become noisy.
Usually if the problem is minor, adding marvel oil to your engine oil will gradually dissolve the deposit and quiet it down. Internal lifter wear can also cause a similar problem. Adding a viscosity improver such as lucas additive will often help with that.
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1 Answer

Valve tapping ccan I fix it myself before I take it to mechanic


Inspect/Test/Service/Replace Hydraulic lifters can fail for several reasons:
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  • A lifter might be noisy because of an oil pressure problem.
NOTE An oil pressure problem will be evident on hollow pushrod engines if no oil is reaching the rocker arms.
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Hydraulic lifters are not rebuilt because they are relatively inexpensive. It is possible to disassemble and clean lifters but they must be reassembled with their mated parts. Because of the labor time involved, this procedure is usually impractical.
Sometimes a piece of foreign material becomes lodged in the lifter check valve. If the lifter is removed and disassembled before serious wear between the lifter and cam lobe results, it may be cleaned.
Worn mechanical (solid) lifters can be reground.
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It might occasionally be necessary to disassemble a hydraulic lifter to clean it or to inspect it.
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  • Lifter disassembly is done by pressing down on the pushrod seat with your thumb and using a screwdriver to remove the snap ring.
  • Remove the plunger from the body; this may require tapping the body.
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  • If the internal components pass inspection, the lifter can be reassembled.
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1 Answer

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3 Answers

Looking to adjust valves on a 2.2 chevy motor in a Corsica hydraulick lifter


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1 Answer

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Rule of thumb is 10 lbs. of pressure for every 1000 Rpm.

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This by-pass valve is usually located in the engine block, where the filter attaches. It's up in the block itself. Depends on the vehicle, as to whether this statement hold true. There are many designs for an oil system.

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2 Answers

My friend just got a 1988 ford ranger  v6 2.9L and has a valve tap and was wondering what different kind of ways he could fix this


if its an ohv type the most common fault is that the oil ways to the rocker shafts become blocked
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