Question about 2004 Audi A4

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Soulds like valve clicking noise for about a sec during startup the goes away. when I changed the oil and filter I heard the same thing once I started the engine to let oil circulate through engine

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It's normal. When the car has sat, the oil drains down to the pan. On startup, you're starting an engine with no oil pressure (any car is like this), but once the pressure pumps up after a second or two, the noise goes away. Don't worry about this - it's normal.

Posted on Jan 03, 2009


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Only when I start the car I hear noise like tktktktk for 5 sec and after 5 sec is gone, and noise is coming from above dashboard close to mid line of the car. What it's problem?

Sounds like valve lifter noise. I take a two foot long screw driver and press the handle to my ear and the hard end to the point I am trying to listen from. I would listen to the valve cover and around other points on the engine. If it is from the valve train, the very first thing to do is to check the engine oil level, and oil pressure. If they are low you would have this problem. I do not think it is valve adjustment because it goes away after a few seconds. Next suspect is a valve lifter with a collapsed spring. If it is that the lifter will need to be replaced, and that requires enough effort that usually your engine has enough miles on it, that it is not worth fixing. Live with it until you replace the engine.

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Just bought a 2016 Kia Sedona van. When starting it, it sounds really loud when cranking it up. It goes away after a while. Is that normal?

probably not but it depends on the quality of the oil in use , the wear on the engine and the quality of the filter used
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Makes like a ticking or light knocking noise at start up, whether it's hot or cold outside. I usually let the truck idle for a while and it goes away.

Usually a sign of needing an oil change. My Dodge Dakota does the same thing, when I change the oil it goes away. Every couple of oil changes I use kerosene to clean out the gunk, just put kerosene in place of the oil, let the motor run for a minute then drain, replace the oil filter, and fill with oil, then you're good to go.

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I have a 2004 Toyota Tacoma. During the last 2 months when I start the truck in the morning I hear a "tac, tac, tac, tac ...." noise for 30s to 1 min than it stops when I drive away. This...

This is most likely a noisy lifter (or valve tappet). In cold weather, the clearances in the valve train open up because metal contracts due to the cold. Once the oil pressure comes up after start the noise goes away because the larger clearance fills with oil and the lifter becomes "cushioned" with the oil. The proper fix is to have the valves adjusted. I believe in your model, that is done by putting shims on the lifters. This will quiet the noisy lifters. In the short term, you can try using a lighter weight oil for cold weather. This will get the oil to the lifters faster after start up and quiet the tapping more quickly. Once the weather warms again, shift back to the normal weight.

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I would recommend changing the oil and filter, using the correct oil. It's possible the wrong oil could cause the noise. Wait and see if the oil change has any effect on the oil pressure reading. If it doesn't, change the oil pressure switch or sending unit.

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1 Answer

There is a clicking noise from the engine,changed the fly wheel ,no difference.Checked the valve springs they were all good.there is a miss fire in the no.4 cylinder but when you give her gas it goes away....

Sounds like you have a sticking valve. Drain about 1 quart from your oil. Pour a bottle of engine cleaner into the oil. Let the engine run for about 5 minutes, turn engine off and let the oil drain back down, give the oil time to cool. Drain your engine oil and replace the oil filter and new oil. Sometimes this will have to be done 2 times. But I would do this once and then do this again in 500-1000 miles. the reason you hear the noise go away is, the engine reaches a higher rpm the vales are working faster and harder preventing it from sticking.

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Noisey motor on startup, valve train noise goes away after warming up

A couple seconds of valvetrain clatter are expected because the lifters are hydraulic and have to pump up from oil pressure. If it lasts longer than that, you may have some oil sludge clogging some of the feed channels. Try adding half a can of Seafoam (sold at any parts store) to the crankcase, drive it about 100 miles, and change the oil and filter - if this is the issue, the Seafoam should cure it.

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I have 1997 chevy Z-71 sometimes on startup the engine makes a knocking sound for about 3 seconds and goes away. I dont know if I have a major problem or not can you help?

I think it is normal for these vehicles. My '97 Tahoe did it also and I'd heard it was normal and not to be worried about. Kind of sucks but I had 150,000 miles on mine and it was fine.

Good luck.

Aug 30, 2009 | 1999 Chevrolet Silverado 1500

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