Question about 1999 Mercedes-Benz E-Class

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Ticking noise from engine--sticking valve? E320 1999 165 000 miles

I recently bought a 1999 E320 and the engine was not noisy in the beginning and not very audible in street traffic. I made a mistake? after opening the hood I heard a ticking noise but by then it was too late for remedy the owner, original byuer with all maintenance records and keen in keeping the car top fit, was surprised and said he did not hear it either..
Well I am stuck with it now...

A brief mechanic eyeballing suggested it may be a stuck valve..the engine purrs and responds fine. After startup (cold) the engine doe not audible tick but after a mile or so it is noticeable when the window is down or when idling with the hood up. Oil Check OKay Mobil1 5w30 syn
Engine runs smooth good pick up and fuel economy.

Help Grischa
Do I have a big problem? What is a reasonble remedy.

Posted by on

  • xanthe NZ Jul 05, 2008

    I have the same noise in my 2003 E320 (W211) but have traced it to a vacuum solenoid valve in the left front of the engine bay below the air intake and connected to the engine in the vicinity of the inlet manifold.. I seems to have no adverse performance effect though?

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5 Suggested Answers

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SOURCE: Which oil is recommended for a 04 Dodge 1500 4x4

Brand names aside, both lubricants bear the same designations. 5w being how the temperature when cold affects the pour point of the lube, second # being how the lube protects components (film strength) when at operating temp. If you follow recommended oil change intervals, either will perform fairly well, and better than conventional oil. I have done extensive research on lubricants and their properties as related to professional drag race engines which see far higher pressures, temps and general "abuse" when compared to the grocery getter. The major difference between lubricants from varying manufacturers is the additive and stabilizing chemical packages they add to the actual lubricant and the quality of the "base" oil which is essentially "cloned" to produce the synthetic. This package determines the lifespan of the product, based upon burn off rate, chemical changes from shear etc. Since many auto manufacturers have increased oil change intervals, if followed, any synthetic on the market today is pretty much OK to use. Do your own research if you want to exceed manufacturers requirements. One company, Amsoil, offers some really good lubricants that exceed every requirement in every application. There are other companies that also offer some good options. The final decision is up to you, but in average driving situations, as a general rule, just about any lube that meets manufacturers posted specifications should be OK>

Posted on Jan 26, 2009

  • 17 Answers

SOURCE: i have a 1988 mercedes benz 300c3 it has about

as far as the car reving up when its cold it is probaly a dirty IAC or Idle Air Control valve its only function is to control the idle if you can locate it it is on the intake right bye the butterfly and the throttle postion sensor. And as far as the slow take off it may be the cataletic converters they are exspensive to replace but if clogged up will make the car run like adogg at take off and kill fuel milage

Posted on Mar 04, 2009

  • 2 Answers

SOURCE: While running engine runs hard. Also tapping or ticking sounds after installed new oil pump

If you have an adjustable valve train you may need to adjust the rocker arms. Remove the valve covers and look to see if there are adjusting nuts on top of them. If so, get a shop manual and a feeler gague and a couple of wrenches and screwdriver and follow instructions in manual carefully.

Posted on May 20, 2009

  • 2 Answers

SOURCE: 320 SLK Coil ticking.

I also have a 2001 SLK 320 with same issue. It is definitely a lifter problem due to the fact that it is occasional. Also, if a coil were bad then it would trigger an engine code ('check engine' light), plus it would run rough for longer. Try some oil treatment first, if that does not work for you then you'd have to replace the lifters.
Honestly, it's a lot of work. I am not sure if I am going to keep it or not. I honestly absolutely love my car but I just don't know now.

Posted on Jun 22, 2009

alicantecoli
  • 21990 Answers

SOURCE: 94 Merc: Stalling,shaking, gear stick with mind of its own, HELP!

sounds like the flex plate on the back of the torque converter has splt across the bolt hols that hold it to the crankshaft

Posted on Oct 25, 2009

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Since the ticking noise has been going on for about 6 years and you have not noticed anything yet, doubt that it is much of a problem.

To be sure, next time in for service, have the mechanic check it out. A valve adjustment may be necessary. Or a lifter may need some work.

If the ticking is coming from the engine, take a short length of pipe and hold it on the valve cover, etc.. You might be able to locate the ticking this way. Don't touch any electrical contacts.

If it's coming from somewhere else on the car, with the car in park and on, give a listen under the car at various points to see you if can determine location.

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Added new link for additional information and discussion on oil treatments that may help the ticking: (not a sales or spam link)
http://community.cartalk.com/discussion/2280059/oil-additives-for-noisy-valve-lifter

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