knocking what is it can you tell?

click /ubbthreads/images/graemlins/banghead.gif

 

[Barnes]

I would suggest you drain the oil to look for beaing material. Could be a rod bearing. If your oil looks clean, I would pop the valve cover and make sure you don't have a collapsed lifter, or threw a rocker or something. If you valve train is fine I would not be surprised if it was *really* bad lifter tick.

 

[Barnes]

Uhg. Didn't notice your other thread. You didn't need to start another thread man.

 

[Specter]

I had the same sound, drained the oil two days ago and checked the rod bearings, turns out they are as good as dead.

 

well I checked the a/c compressor that not it and its definetly comes from the top. so Im gonna hold up hope for sticky lifters... now I still have not drained my oil but if it were a spun bearing would my car run weird at idle or smoke .. because it does not even from a cold start even though when first strted i can hear that clacking when the motor first revs a little for warm up ... thanks again guys ...I will get this all fixed and spend all my money If i have too ... I used to be part of the z car curse with 4 80s turbo zs and spent alot of time and money on those cars ... I hope this is not the same

 

[turbowop]

Loose flywheel bolts can sound like intermittent rod knock as well. Ask me how I know. /ubbthreads/images/graemlins/crazy.gif

 

[Jesh]

Just curious, does the sound seem to go away above 3-4000rpms? I'm not really recommending revving up your engine with a possible bad rod bearing, but if you happen to know off hand i might have another idea on what it might be.

 

It does seem to get silenced a bit but I will say I drove it home doing 50 from chandler to maricopa probly dumb but had to get it home /ubbthreads/images/graemlins/bawling.gif

 

[boostedinaz]

Isaac since I have an emotional attachment to this car I can help out for nothing or next to nothing depending on what needs to be done. I just want to see it return to it's formal glory. Unfortunately time is the only issue. I have a decent amount of side work and need to mix that in with family time, but I am sure we can work something out to get this looked at and fixed.

 

[toybreaker]

/ubbthreads/images/graemlins/applause.gif

Micheal,

To quickly troubleshoot this problem, I suggest you use a logger and disable one injector/cylinder at a time. If the noise changes goes away, you can bet that rod bearing isn't happy.

If the noise doesn't change under load, but comes and goes with engine rpm, it might be a balance shaft bearing

If the noise sounds like it's coming from the top of the motor, I wonder if the car might have a couple of weak/collapsed lifters?

Pulling the valve cover and pressing on the rockers would tell that tale. Any that are squishy need to be replaced. Even of they all feel okay, be sure to check the cam lobes for signs of abbynormal wear/contact patterns

At any rate, I'm damn glad to see you on the job, and I know you guys will get it sorted out!

If you guys need anything, just holler. /ubbthreads/images/graemlins/smile.gif

 

[shredder2010]

That sounded like mine i had crankwalk and a crack piston skirt.

 

I truly apreciate all the help I can get I will have a friend of mine check it out but not til friday ...i need whoever can make it out here to have a look any quicker would be great . Im just surprised its not smoking or making alot of noise at idle thanks michael keep me updated thanks /ubbthreads/images/graemlins/crazy.gif