Ok guys I recently completely rebuilt a D16z6 and it starts up just fine it just knocks and it sounds like it is coming from the valvetrain around the #1 cylinder. I adjusted lash to 8-Intake and 10- Exhaust which is right inbetween spec. Like I said it clinks and clanks etc. The knock increases with RPM. Oil level is perfect. And Im positive its not belt slap. Any ideas?!?!
I know I have the valvetrain put together right too, but just incase can someone send me a pic of the z6 valvetrain and how its supposed to go together?
The motor runs great minus that knock LOL.

PLEASE HELP!! I need to get this running excellent TONIGHT!
Thank you!!


Here are some pics....

 

HELP!!

 

Looks like your missing a valve cover and oil presure

lol I dont know anyone about valvetrain...

 

Anyone? I checked the LMA's and they all checked out great so.......... HELP!!!

 

did you rebuild the block? could be piston slap.

 

yes I rebuilt the block, Im pretty damn sure its not piston slap. It has to be in the valvetrain somewhere.
I moved the LMA's around and it sounded like it changed where the sound was coming from... Im leaning towards one of the LMA's being bad. Anyway to check this???

 

BUMP

 

did you use alot of assembly lube? the valvetrain looks a little dry...

 

make sure you do a valve adjustment, could be from that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LilCivic04 &raquo;</TD></TR><TR><TD CLASS="quote">make sure you do a valve adjustment, could be from that</TD></TR></TABLE>

Im glad you read my posts..... I already did a valve lash adjustment.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sleepy_Red_hatch &raquo;</TD></TR><TR><TD CLASS="quote">did you use alot of assembly lube? the valvetrain looks a little dry...</TD></TR></TABLE>

There is PLENTY of oil in the valvetrain now, Its brand new oil so its hard to see.

ANYONE ELSE??? PLEASE I NEED SOME HELP WITH THIS!!

 

Ok so tonight, I got new LMA's and I took the valvetrain completely off and took it apart and checked everything. Everything checks out great. New LMA's installed and the freakin thing still ticks!!
- One question what does detination sound like?

 

i dunno... but i had that problem.. and it was my alternator not secured. hold yur alternator and see if it goes away. i thought i had a knock and then bam i was like thank god.

 

did you give it a quater turn to the lifter? like the manual book says with a feeler gauge between it to make sure the clearance is correct.. that may help..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eglifestyle &raquo;</TD></TR><TR><TD CLASS="quote">did you give it a quater turn to the lifter? like the manual book says with a feeler gauge between it to make sure the clearance is correct.. that may help.. </TD></TR></TABLE>

Im not quite sure I understand what your asking... Please clarify.

 

ANY HELP PLEASE!!

 

Can you get a video of it running. So everyone can hear the noise?

 

is this all oem? stock valves, cam, pistons, and rods? also was the block decked/shaved, as well as the head?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slambedcivic &raquo;</TD></TR><TR><TD CLASS="quote">is this all oem? stock valves, cam, pistons, and rods? also was the block decked/shaved, as well as the head?</TD></TR></TABLE>

Everything you said is correct, minus the block being shaved. checked block with straight edge and it checked out well.

I will go take a vid here in a min and host it up.

** I also changed my valvelash to the tighter side of spec to see if it would stop. 7-Intake, 9-Exhaust

 

ok is it ticking or knocking cause those are two very different sounds. Sometimes the injectors' solenoids opening and closing can produce a very pronounced ticking sound.

 

did you clay the engine ?
did you do a comp test ?
did you get a valvejob with new valves, angles and proper size ?

good luck

 

Whats LMA lol?

 

dont tighten your valves up... theres a reason for you noise... you need to take the head off and clay the engine as someone else mentioned.

 

clay the engine? wow what's that mb i need to do it too

 

Here is a video of it. Let me know what it sounds like.

http://s18.photobucket.com/alb...g.flv

-I have done a compression test and it came out great. I will have to go look for the numbers again but I remember they were all above 100 for sure.
-No I did not clay the motor, I am not even sure what that is? Anyone care to elaborate?

Hope the video helps...

 

you take a small strip of clay and lay it into each relief on the piston. then you install the head with timing belt, and hand turn the engine, see if the valves go THROUGH the clay and hit the piston.