Hey guys and girls

I noticed that when the engine is cold, it sounds like the valves are clicking a little loud. However, when the engine warms up, it quiets down. Anyone else experience this?

Thanks in advance!

Eric

BTW engine wise the car is stock (no intake or exhaust)

 

I think that noise comes from the pistons. They expand slightly as the engine/oil heats up.

That's what I THINK.... maybe someone can comfirm this?

 

sure it isnt the injectors?

i noticed my injectors tick pretty loud.

 

Mine's is the opposite. Quieter when cold...except for the start up where it rattles like a tin can before oil pressure builds up.

 

Same noises here.
I'm getting a valve adjustment in a couple of days to see if this helps any of the noise.

 

Thanks everyone...maybe I'll take it in for a valve adjustment and see what happens.

 

When the engine is warm, the camshafts are slightly bigger than when it is cold. Heat expands the metal, causing the gap between the rocker and the cam lobe smaller, having less ticking sound. This is what I've been told, makes sense to me.

 

Valves never actually close once engine is warm. Almost but not quite.

Injectors will tick upon startup. Do a valve adjustment and check. You may be loose on a few valves. They are easy to find once they are loose.

 

valve adjustment,also what kind of oil are you running ?

 

Full synthetic.

 

10w-30 ?

 

I dont think this is a problem at all. My engine does it. So did my GSR. I think it just has to do with the natural physics of the material that engines are made out of. Like the other people said gaps and other things that play in to extreme temp differences.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris N &raquo;</TD></TR><TR><TD CLASS="quote">I think that noise comes from the pistons. They expand slightly as the engine/oil heats up.

That's what I THINK.... maybe someone can comfirm this?</TD></TR></TABLE>


You are correct. I was under the impression that only larger engines, such as camaro/trans am ls1's, which are famous for this, would only suffer from this problem.


Get a valve adjustment and go from there.