Valves knocking when I start my car in the morning !

[ziadc]

Despite the warm weather here about 30 Celsius at morning, when I start my car in the morning I hear valves knocking is this normal ?

[alonsorules8]

It is with mine I have 18k on my car and it knocks for 1 to 2 min then goes away.

[BBISHOPPCM]

This is normal to a certain extent. There will be valve noise on a cold engine, with or without hydraulic lifters (the Versa does not have hydraulic lifters). I wouldn't worry too much as long as the noise goes away after a minute of idling.

[scooterbob]

Just a quick thought. Hopefully you are using a factory oil filter or equivelent that has the backflow valve in it. Without this the oil will take longer to get to the vital parts of your engine during start up.

[ziadc]

The car done only 4000km still under warranty tomorrow I'm going to the dealer for this matter and do wheel balance i feel vibrations while braking at low speed ( the car is so fragile !).

[equlizer]

I get that sound all day long with my car. Come to think of it I hear it 95% of the time when the AC is on. Is this something I should be worried about? I have 60,000Kms on it and i have a 180,000 bumper to bumper warranty.

[#1Tango]

i hear it all the time regardless of the time of day/temp/and using a/c its really annoying...

[Driving Instructor]

i hear it all the time regardless of the time of day/temp/and using a/c its really annoying...

To quiet the valves, I am now running fully Synthetic.

Regarding the noise when the A/C....... get use to it..... it's the compressor. They changed mine and it came back!

Nice eh!

[Scuba Steve]

Despite the warm weather here about 30 Celsius at morning, when I start my car in the morning I hear valves knocking is this normal ?

That is probably the fuel injectors making that noise, it's normal. Sevice manual below....



Scuba
Modified by Scuba Steve at 2:06 PM 9/29/2008

[Shad0wXCalibur]

It's normal. Open the hood of any car and you'll hear drivetrain noise. For most cars, it the injectors. Your valves shouldn't be excessively clattering no matter what oil you're using. You'll know excessive valve clatter when you hear it. It's loud and common when you change the oil on a vehicle and first start it and it takes a couple seconds to get full oil pressure due to having to fill up the new filter first (unless it sits in a position to where you can fill it first).

[ziadc]

Actually the noise goes away after 2 or 3 minutes only.

[alex_btl]

I can hear that noise anytime I start the car and I got used to that

[BBISHOPPCM]

Whatever you do, don't change the oil viscosity or add ANYTHING to the oil! the noises are normal. If your engine truly had a malfunction or failing components, they would get worse (or to the point where a warranty repair would be in order), well before the 60k mark.