Hybrid/Tech B16 / B18 / ZC / D16 / H22 / Mini-Me Ask your Honda Engine Questions here.

Bad lost motion assemblies?

Old 02-08-2009, 12:58 PM
  #1  
3.0 BAR
Thread Starter
 
Join Date: Oct 2005
Location: St. Augustine FL
Posts: 3,938
Default Bad lost motion assemblies?

I have a freshly built a6 block/z6 head. It runs great but it has a pretty good tick coming from the head. The valves have been adjusted so I know it's not that. The tick happens at idle and under load, but when slowing down in gear there is no sound. I have great oil pressure so I'm not considering that it's rod knock, it's also too high pitched to be rod knock. I have spun plenty of bearings.
Scott-EP is offline  
Old 02-08-2009, 02:16 PM
  #2  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: Bad lost motion assemblies?

Wrist pin, broken valve spring, etc. Pull individual plug wires and see if that makes it go away.
Tom-Guy is offline  
Old 02-08-2009, 03:26 PM
  #3  
3.0 BAR
Thread Starter
 
Join Date: Oct 2005
Location: St. Augustine FL
Posts: 3,938
Default Re: Bad lost motion assemblies?

if its a wrist pin, im jumping off a bridge. that though was in the back of my mind, but i am really hoping it isnt.

i changed the LMA's for another set of used ones i had and the problem went away till it warmed up. before it would do it cold or hot.

i am assuming if the problem goes away with a plug wire pulled that means wrist pin huh?

the valve springs are good. i looked the whole valve train over pretty damn good
Scott-EP is offline  
Old 02-08-2009, 03:33 PM
  #4  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: Bad lost motion assemblies?

Probably, but not 100%. Try it.
Tom-Guy is offline  
Old 02-08-2009, 03:45 PM
  #5  
3.0 BAR
Thread Starter
 
Join Date: Oct 2005
Location: St. Augustine FL
Posts: 3,938
Default Re: Bad lost motion assemblies?

it seems to get louder when i pull plug wires, but it doesnt matter which ones. it sounds the same when i pull each one
Scott-EP is offline  
Old 02-08-2009, 04:26 PM
  #6  
3.0 BAR
Thread Starter
 
Join Date: Oct 2005
Location: St. Augustine FL
Posts: 3,938
Default Re: Bad lost motion assemblies?

if its a wrist pin, couldnt i use a dial indicator and along rod on top of the piston through the plug hole to see if i can move the crank and the piston sit still for a few degrees?
Scott-EP is offline  
Old 02-08-2009, 05:14 PM
  #7  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: Bad lost motion assemblies?

Maybe. The pin might have side wear, also it might be slightly bound when not in operation.
Tom-Guy is offline  
Old 02-08-2009, 05:15 PM
  #8  
3.0 BAR
Thread Starter
 
Join Date: Oct 2005
Location: St. Augustine FL
Posts: 3,938
Default Re: Bad lost motion assemblies?

i guess i should have mentioned that these are vitara pistons with the clips to keep the wrist pins in
Scott-EP is offline  
Old 02-08-2009, 06:11 PM
  #9  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: Bad lost motion assemblies?

They can still have side wear in a similar fashion. The clips can be worn away though, would run the pin against the bore and trash it.
Tom-Guy is offline  
Old 02-08-2009, 06:14 PM
  #10  
3.0 BAR
Thread Starter
 
Join Date: Oct 2005
Location: St. Augustine FL
Posts: 3,938
Default Re: Bad lost motion assemblies?

i took a short video of it running and then realized i cant find a cord to connect the camera. im sure i have like 15 of these things and i cant find a single one.

it looks like i am going to pull the damn thing apart. this is what i get for getting used parts
Scott-EP is offline  

Thread Tools
Search this Thread
Quick Reply: Bad lost motion assemblies?


Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.