Clacking noise

[MrMarty51]

Seriously JB Weld doesn't fix it.

Post #92. for parts.

1992 6.5TD Rescue

So I need to be committed now. :wacky: Seriously! :dead: Went and picked this up from north of the middle of nowhere, AZ. 1992 6.5 TD 4x4 3/4t reg cab. INOP and nice and cheap. Work truck with single glass headlights, rubber floor and torn up vinyl seat. Has PW/PL/PS/PB. The PW/PL is...

www.thetruckstop.us

I really liked that truck. I came in just shortly before You put it on the market.
I think My engine starts easy, that one has it beat by at least a couple of revolves. LOL

 

[Chevy6.5]

What kind of starter would you guys recommend?

 

[Will L.]

Powermaster 9052- hands down!

 

[WarWagon]

A "Powermaster 9052" starter for 6.2 and 6.5

The Powermaster 9052 starter for 6.2 and 6.5

As the hard start and air issue caused the demise under the no questions asked Jegs warranty of my 1st Powermaster I had the opportunity to compare cranking RPM between starters. (The starter would spin without turning the engine.) The Powermaster liked to spin at 180 cold. It would take a...

www.thetruckstop.us

@ak diesel driver also logged cranking RPM with one recently.

 

[Chevy6.5]

Okay, so I used a stethoscope to pinpoint my noises, and the clacking noise seems to be coming out of the turbo area. Another thing about the noise you don't really hear it until you put it in drive and accelerate. When you put the stethescope on the turbo you can hear the noise at idle. I took the hose off where it connects to the turbo and the was oil and some crud inside. I'm assuming that shouldn't be in there. I listened where the rocker arms are and at the injectors and it sounded like there was some knocking, but I'm also not sure what it should sound like normally.

 

[ak diesel driver]

Looks pretty normal for a high mileage engine

 

[Will L.]

Make sure the turbo waste gate isn’t somehow making the noise.

Less likely is: Grab the nut on the turbo with thumb and finger. Try to wiggle it to see if there is any free play. There shouldn’t be.

The oil is crankcase oil getting sucked out of the crankcase through the cdr. The oil isnt good for the turbo, but only shortens is life minimally- not enough to think twice about.

No clacking should come from the turbo- what you are probably hearing is the sound of the valves, injectors, etc coming through the exhaust manifold and being turned into an echo chamber in the turbo. If you remove the turbo, the sound would be more traceable. If you remove it and the sound is gone and is the turbo- its about to go grenade. But that would require the movement spoken of earlier and wound be the turbo wheel(s) hitting the housing.

The valve train, like from collapsed lifters or rocker arms heavily worn are more likely to be the clacking.
A video would help.

 

[Chevy6.5]

Make sure the turbo waste gate isn’t somehow making the noise.

Less likely is: Grab the nut on the turbo with thumb and finger. Try to wiggle it to see if there is any free play. There shouldn’t be.

The oil is crankcase oil getting sucked out of the crankcase through the cdr. The oil isnt good for the turbo, but only shortens is life minimally- not enough to think twice about.

No clacking should come from the turbo- what you are probably hearing is the sound of the valves, injectors, etc coming through the exhaust manifold and being turned into an echo chamber in the turbo. If you remove the turbo, the sound would be more traceable. If you remove it and the sound is gone and is the turbo- its about to go grenade. But that would require the movement spoken of earlier and wound be the turbo wheel(s) hitting the housing.

The valve train, like from collapsed lifters or rocker arms heavily worn are more likely to be the clacking.
A video would help.

So you can run the engine without the turbo on?

 

[WarWagon]

So I didn't much concern to the missing air filter minder because I assumed it wasn't missing long. Then you posted that UGLY Turbo picture with the ugly dirt on the "Inside"! This engine has been dusted bad. The grit you feel in the turbo intake has ground up the rings, pistons and cylinder walls. Further the dirt is embeded and will cause wear from here on out. Only a rebuild can remove it. Yeah, you are correct that it should not be there. Regardless you can try and enjoy what life this engine has in it. Cleaning the intake manifold, upper and lower, turbo, and intake tube will help.

I am afraid to ask, but, what does the blowby look like with the oil fill cap off and engine running?

On the turbo: does it look like the turbo wheel has been grinding the housing? I can't tell from the picture.

 

[Will L.]

You can run the engine without the turbo. You have to be EXCEEDINGLY CAREFUL that nothing gets sucked into the intake.

 

[Chevy6.5]

Here is a video of the engine running with the oil cap off. You can't really see the smoke but there is some coming out although it's not an awful lot.https://youtu.be/NJdZn5nBgN0 And here's another video of the engine running againhttps://youtu.be/onsxtiIDKG0I have no idea how long the minder has been off. We have had the truck ten years and I don't ever remember seeing it in there. I know for sure it hasn't been in for the last 4-5 years. The nut on the turbo was not loose. I not sure if has been grinding, it is pretty shiny which makes me think that it has; although it doesn't look damaged or anything.

 

[Jaryd]

Can you post the videos again. Looks like they got joined with the sentences and didn’t make a link.

 

[Chevy6.5]

 

[Chevy6.5]

 

[Chevy6.5]

Sorry

 

[WarWagon]

The starter video makes me wonder if the flexplate is cracked or damaged making a noise? ( The starter is for sure a problem and is due for replacement. )

Not bad for blowby at all. Noise from the oil fill is "normal" with a chain.

On the turbo Can you see if the turbine blade is shining up the turbo housing aka wearing into it? You can't tell from feel if the bearings are gone, but, the wheels rubbing is a clear sign the bearings are shot. Indicated in the picture where to look.

Injectors with high miles were already scheduled for replacement or rebuild. When doing that you will be needing to "take a look" under the passenger side valve cover. So turbo comes off anyway. Put it's oil line into the oil fill and secure it. Or better yet plug the oil feed hose line off at the block. Then you can run the engine without the turbo on.

Then with the turbo off, injection lines off, valve cover off take a look. I bet the valve cover gasket is leaking anyway. You can run the engine if you need too with the cover off by reconnecting the injection lines, but, it's an oily mess.

It could be a shot injector firing making the noise. But again it sounds camshaft lifter tick noise too me. A powerstroke event is the same speed as the cam thus injector suspect... You can loosen one nut at a time on the passinger injector lines (I would do it engine off then start it.) and see if it makes a difference. The loose line won't fire that injector.

 

[Chevy6.5]

It does look like it's shining the housing up. Thanks for all the info. I just want to make sure this engine is not to far gone before I start putting a whole lot more money into it.

 

[Chevy6.5]

Btw, just for laughs I find the air filter minder. It was down next to the radiator, who knows how long it's been down there.

 

[WarWagon]

What is the rest of the truck like? What is it used for?

Before spending ANY money do the following:

I would run the engine without the turbo and check for the noise. Then do the loosen injector line nut trick to see IF it's injector noise. Rotate noisy injector with another cylinder to make sure noise follows injector.

Then inspect under valve cover.

I assume you have taken the belt off and spun everything by hand?