Abuv

Hi there everyone! I'm a newbie here and really want to hear what you guys think about this. I'm not sure if someone posted a topic like this before because I can't find it...

Anyways, I have a 1996 w210 and was wondering what might be the issue with it. When I give it a cold start, I hear clicking from the engine and it matches the revs on it too (revs go up, clicking goes faster, visa versa). It also went away once I hit 80C. I didn't mind it at first... until it began to get louder and it's at a point where it's not going away. All I can say is the belts are fine and I change engine oil frequently. What do you think it is?!

vishanthram

I have the same ticking problem with my 1999 e430 but it is going away once I put it in drive or reverse or neutral

Plutoe

After a cold start, why not lift the hood-----then look and listen and endevor to locate the general area of the engine where the clicking is comming from??

Mikey213

Could be worn out oil guides right?

Abuv

I did that. It seems to come from the drivers side and from the block. To add there aren't any physical signs of damage.

vishanthram

I actually found out what the clicking noise are and why they do that noise!! Ah... Abuv do they make the clicking noise like when you are not moving at all?? Just to make sure we are talking about the same problem here. If that is the case i know why. Its the gas tank vacuum pump turning on and off to suck all of the vapor from the tank and to burn the vapor when you are idle. The noise is suppose to be heard, just like you said the noise comes from the driver side near the block. Currently it is raining outside and so i will try to post a pic of the part under the hood maybe by tomorrow afternoon. So do not worry about that noise, if at all thats what you are talking about.

vishanthram

Here are the pics, sorry about the delay because its been raining and i was in college and finally i found some time to do this. This is what making the clicking noise. Try this when you notice the clicking noise next time, hurry and go unplug this just for couple of seconds and see if the noise goes away. If it does then it is this and this noise is normal. if it doesnt then you have a different problem.

jc4635

I have been reading threads about a constant tick tick tick that my W210 99 E430 was having. Lots of threads lead me to the (mot) pictures above which does have a fast clicking noise until oil warms up, but isnt that loud. I also had others tell me it could be valves. It sounded like it was coming from my injector area on my driver's side. I removed the fuel rail and inspected and cleaned the injectors. I changed all of my vacuum hoses and oil cooler rubber hoses. I found vacuum lines completed destroyed. It is good to check those. Pelican Parts has a lot of technical data on where to check these. None of this solved my ticking noise!!!! Turns out my static tick tick tick noise was voltage loss from at least one of the coil packs or plug wires. I removed all 4 coil packs on the driver's side and everyone had cracks in the housing. I used 100% silicone on each one and cleaned connections. I have no ticking noise any longer!!!!