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Volvo S40 1.6 2000. Noisey tappet noise from inlet valve side

Do you think it needs new hydraulic tappets or it is the Variable valve timing control valve playing up. At idle it sounds worse than a diesel. Noise goes with load.

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  • kev_costello Apr 01, 2009

    i have the same problem on the same age and engine size volvo s40.Cant figure it out

  • Patrick Dennehy May 11, 2010

    Hard to hear from where I sit. Anything I should know about your choice of oil, length of service interval, routine maintenance or lack thereof? Sounds like you've had experience or suggestions about the VVT control valve. Any qualified ears tuned in to your percussion ensemble yet? Give me what details you can, that may help. Thanks, TT

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6 Suggested Answers

stormbrewin
  • 426 Answers

SOURCE: tappet noise

Sounds like worn lifter/cam lobe,quite normal when engine gets a few mles on it.Lifter is finding it hard to fill the extra clearance created by wear.What sort of oil are you using and is it clean?Wear in an engine will lower your overall oil pressure as well,not generaly enough to worry about but it does contribute to the problem.At idle or when cold is generaly when this happens?

Posted on Oct 24, 2008

  • 102 Answers

SOURCE: Volvo XC70, Grinding Noise

sounds like c/v axles (front drive shafts) they will make a clicking sound normally when turning sharp and accell at the same time at slow speeds / look at the axle boots and look for grease on the inside of the front wheels leaking out the axle boots

Posted on Oct 07, 2008

  • 18 Answers

SOURCE: 2006 Volvo S60 AWD rear humming noise

Wheel bearing is the most likely cause. Prob a 1.5-2 hour labor rate job in the shop.

Posted on Oct 28, 2008

stormbrewin
  • 426 Answers

SOURCE: noisey tappets

8 valve engine ,intake cold 0.13 to 0.17mm hot 0.23 to 0.27 exhaust cold 0.16 to 0.20 hot 0..26 to 0.30 mm 16 valve engine (intake and exhaust) cold 0.13 to 0.17mm and hot is 0.17 to 0.21mm

Posted on Nov 22, 2008

  • 8 Answers

SOURCE: 01 s40 idle air control valve- hard to replace?

its sitting right up front right side easy to replace star scewdriver and vice grips or pliers to remove plastic cover and start work

Posted on Dec 12, 2008

  • 1 Answer

SOURCE: tappet/valve settings???

o.25mm when hot this is for inlet and outlet

Posted on Feb 11, 2009

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Tappets are fitted between the inlet and exhaust valves, they ensure that the valves open on time and more importantly close properly. If the tappet happened to be badly adjusted and did not let the valve close properly then damage to the valve and cylinder head can happen by burning.
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This model has one belt for the cam drive system, along with an oil-filled pretensioner. Additionally, these models have VVT (Variable Valve Timing) which consists of a PWM (Pulse Width Modulated) valve and associated plumbing to the hydraulic tappets. This system increases or decreases the amount of TDC overlap (cam timing) based on driving conditions resulting in enhanced performance and lowered emissions. The caveat is that one must be diligent about oil changes and usage of the proper weight oil to avoid clogging of the oil feeds to the tappets.

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2000 crv honda just got a new timing belt and water pump after a couple of days now it make a noise (loud clicking noise) when I start it up


The noise you describe may be due to hydraulic tappet leak back form a oil that is of the incorrect viscosity or a cheap oil filter that doe's not have an anti leak back valve in it .The noise is until the oil pressure builds up and makes the hydraulic tappets work properly.

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What is tappet settings


Hydraulic tappets are tappets that contain a small hydraulic piston, pressurised by the engine's lubricating oil supply.[5] Although the piston does not move appreciably or frequently, it acts as a hydraulic spring that automatically adjusts the tappet clearance according to the oil pressure. This makes the valve actuation self-adjusting and there is no need to adjust the rockers. Hydraulic tappets depend on a supply of clean oil at the appropriate pressure. When starting a cold engine, with low oil pressure, hydraulic tappets are often noisy for a few seconds, until they position themselves correctly.


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Can you set valve clearances on a 1997 clio 1.2 engine.my engine sounds as if the tappets are noisey.


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1 Answer

There is a clicking noise ( raises and lowers ) when idleing . someone thought it was a cam noise


hi this could be a cam noise, but also can be a tappet noise, if you have not changed the oil in a while it could be the oil has gone thin and needs new oil, the other thing is, blocked hydraulic tappet's, best way to sort this is to use an engine flush which you add to your old oil, run the engine for half hour, then drain, then refill with new oil, do not use 15w/30, try using 20w40 this is a thicker oil and will possibly silence the tappet's, but if the engine has done allot of miles these may need replacing altogether.....hope this helps

Feb 26, 2010 | 2004 Volvo S40

1 Answer

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i would suggest asking your mechanic which viscosity(thickness) oil he put back in and check it against the manufacturers recommendation as if it isto thin then it will make your tappets unusally noisey if he has put in the correct oil then i would say that they were quiet because of the old gungy oil and they either need adjusting or if they are hydraulic then the lifters need replacing

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