Originally Posted By: kenpoed
per prior threads, had a remanned engine put in. It developed a clicking sound and the engine remanufacturer can not figure it out (yes, he is reputable). Pistons, valves, oil and water pump as well as timing belt and tensioner were replaced. THE CLICKING COMES FROM THE VALVETRAIN.
here are the steps taken:
HAd Honda foreman perform cold valve adjustment, did not fix it. He suggested to check cam lobes.
Checked cam lobes, no issues
Replaced LMA (lost motion assembly), still clicking
A few other facts: It is NOT the fuel injectors, they were replaced and are oem and no issues.
The original engine blew due to a seized tensioner (not replaced when timing belt and water pump were replaced 20k miles before).
Could it be ??:
Cam actuator?
Tensioner?
HELP!!!!!!!
Without getting into the warranty end of this and just treating it as a normal diagnosis i would get a mechanics stethoscope.
You should be able to isolate the area the noise is coming from. The sound will resonate throughout the engine but will loudest at the point of origin.
Start at the top of the engine and move to the valve covers are both banks making noise?
If its only one bank you should be able to isolate it further to the front, middle, rear of the head.
If its on both banks then look for something common to both banks like an oil pressure valve.
There will probably be a solenoid and oil pressure sender, try disconnecting them one at a time and see if the noise goes away. You will get a CEL which you will need to clear.
You can listen to the injectors individually to isolate one if its loud, yes new ones especially rebuilds can be loud as all get out if they leaked any cleaning solution into the coil assy.
Move the stethoscope around the front covers, there should be just normal noise with no clicking.
Go around the head and manifolds if you still cant find it listen for anything different from the other side.
The rebuilder should be able to do this work but if you are not satisfied with their diagnosis you can probably at least isolate it this way.
Once you have a good idea of the exact location thats 99% of the battle.
Post back.
Sears has them as does Amazon and a 1000 other online retailers. It is an essential part of any DIY tool box along with a vacuum, fuel/oil pressure, and compression gauge.
All these are cheap and readily available, they make diagnostic work much easier.
This type works fine, no need for an electronic one unless you do specialized work.
http://www.amazon.com/Lisle-52500-Mechanics-Stethoscope/dp/B0002SQYSM
http://www.sears.com/kd-tools-mechanics-stethoscope/p-00999911000P
http://www.sears.com/lisle-mechanics-stethoscope/p-00919305000P
Before someone mentions it..
This is junk, it uses a two piece wand that is never seems tight and causes noise, just flimsy rubbish.
http://www.harborfreight.com/mechanics-stethoscope-41966.html#.UxisKNs5p-g
