Brand new L2501 started making a nasty noise at 6 hours

[MHarryE]

My bet is something in the valve train. Sharp loud clack engine speed ratio. Will be interesting to see what dealer finds.

 

[JWR]

Let me throw in this opinion: Based primarily on the sound, I think you lost pressure lubrication in the engine. In fact, I'll take a few bets to that on the side. Second, you have very little time on it since the loud clacking began, if I understand you correctly. If that is true, there is probably little or no damage to the engine. Once the cause is found and fixed things will all of a sudden be just fine.

The cause? Infant mortality of the oil pump probably. Possibly a blocked oil passage from debris left in during manufacturing or an oil passage obscured by a casting error. Possibly a plugged up oil filter, maybe mismanufactured?

As said early on, the dealer will find out. PLEASE let us all know the answer. OBTW, under no circumstances do you tolerate rebuilding of anything !!! With 6hrs. if something needs work it is replaced with NEW, not rebuilt. And that certainly includes the engine ! I really doubt the engine is damaged but if it is, at 6hrs., you simply demand a new engine. Period.

 

[DaveB2650]

OBTW, under no circumstances do you tolerate rebuilding of anything !!! With 6hrs. if something needs work it is replaced with NEW, not rebuilt. And that certainly includes the engine ! I really doubt the engine is damaged but if it is, at 6hrs., you simply demand a new engine. Period.[/QUOTE]

Yep^^^^^

If there's any form of hesitation from the dealer, whip out that green JD hat and your attorney's business card.
(I bet you get through this without having to "go green")

 

[auroraproject]

Dealer is on the way to pick it up now. Will update when I have more info.


Betting pool is as follows:

- Air in the injector
- Failed fuel injector
- Failed oil pump
- Rod bearing failure

 

[Soundguy]

Good luck. Let us know what's up.

From a rebuild point of view.. if it did loose pressure lubrication, figure the bearings are all toast, even if they aren't. if there are no marks on any journals, then the crank and cam can be standard and go back in with standard. If any of the bearings spun, I'd have to think the crank will get turned, or replaced. Personally, on a new machine, I wouldn't want to start life with a turned crank and OS bearings..

Now.. if the oil is going grey.. that means water.. we all know that nothing eats bearings faster than coolant in the oil.

it's possible a head gasket let go and is tanking one cyl.. but I'd expect to see steam too.

If it's any type of internal block flaw.. I'd surely not want that unit as a rebuild core. New engine at a minimum.

 

[ruffdog]

After listening to the video, I'm calling it, the time is 11:50am. Pulls the sheet over the engine.

 

[JWR]

After listening to the video, I'm calling it, the time is 11:50am. Pulls the sheet over the engine.

Nah, I'll take some of that money. I say it's just dry of pressure lube and will be fine once the cause is removed. (Unless it ran a long time in that state.)

 

[Soundguy]

Lack of oil pressure caused grey oil?

Usually takes water...

 

[wagne223]

Lack of oil pressure caused grey oil?

Usually takes water...

Metal on metal causes gray oil. Typically caused by lack of oil.

Coolant or water mixed with oil will make it light brown. Often called a milkshake because it resembles a Wendy's milkshake.

 

[JWR]

Metal on metal causes gray oil. Typically caused by lack of oil.

Coolant or water mixed with oil will make it light brown. Often called a milkshake because it resembles a Wendy's milkshake.

Agree on the brown. Thankfully I never saw gray oil. If noticeably gray that could mean his engine ran too long without oil and he may have damage I suppose.