2021 Eco Diesel suddenly much louder

Parratt

Well-Known Member
First Name
Logan
Joined
Jul 13, 2020
Messages
72
Reaction score
55
Location
Edmonton Alberta
Vehicle(s)
2020 JLUD, 1988 MJ, 2010 XK (Sold)

hazards280

Active Member
First Name
Chad
Joined
May 17, 2017
Messages
34
Reaction score
60
Location
Midland MI
Vehicle(s)
2020 JLU Willys - 3.0L Diesel
You should have had that on a flat bed to the dealer yesterday.

It sounds like a rod knock to me. Be thankful you're under warranty.
 
Last edited:
OP
Parratt

Parratt

Well-Known Member
First Name
Logan
Joined
Jul 13, 2020
Messages
72
Reaction score
55
Location
Edmonton Alberta
Vehicle(s)
2020 JLUD, 1988 MJ, 2010 XK (Sold)
  • Thread starter
  • Thread Starter
  • #4
You should have had that on a flat bed to the dealer yesterday.

That sounds like a rod knock to me. Be thankful you're under warranty.

Hmm, Yikes! Im a gunsmith by trade, but my limited automotive knowledge is telling me rod knock should only incease with speed, not go away?

However off to the dealer asap
 

hazards280

Active Member
First Name
Chad
Joined
May 17, 2017
Messages
34
Reaction score
60
Location
Midland MI
Vehicle(s)
2020 JLU Willys - 3.0L Diesel
Hmm, Yikes! Im a gunsmith by trade, but my limited automotive knowledge is telling me rod knock should only incease with speed, not go away?

However off to the dealer asap
Agreed, you would think so, but rod knocks have a funny way of hiding themselves outside of an idle. I wish I knew why and could share with you.

Does anyone know why that is? I'd love to know myself and figure this would be a great learning moment.

I wish you the best on the repair Parratt. Let's hope we're wrong.
 

Glamisfan

Well-Known Member
First Name
Steve
Joined
Apr 12, 2018
Messages
316
Reaction score
412
Location
SoCal, 30 minutes from Glamis
Vehicle(s)
2020 Sting-Gray JLUR
Yeah that’s not good!!! Please keep us updated.
 

bikeindirt

Member
Joined
Feb 19, 2019
Messages
22
Reaction score
26
Location
socal
Vehicle(s)
JLURD
first, I hope we are wrong, and/or the fix is easy, fast & cheap...

rod knock...
What you are hearing is the crank moving thru space where the bearing should be,,, the hit on the other side of the rod.

As you speed up the motor the angular acceleration of the large end of the connecting rod will go way up and can actually cause the rod to stay in contact with the crank instead of going across the empty space.

Also as you come off idle you are going to see significantly increase in both oil pressure/volume and it can actually fill that gap when it's small.

I have lost more than a few motors that ran "OK" until you pull in the pits... LOL
 
OP
Parratt

Parratt

Well-Known Member
First Name
Logan
Joined
Jul 13, 2020
Messages
72
Reaction score
55
Location
Edmonton Alberta
Vehicle(s)
2020 JLUD, 1988 MJ, 2010 XK (Sold)
  • Thread starter
  • Thread Starter
  • #8
Going into the dealership in a few hours here. No loaner vehicles however...
 

hazards280

Active Member
First Name
Chad
Joined
May 17, 2017
Messages
34
Reaction score
60
Location
Midland MI
Vehicle(s)
2020 JLU Willys - 3.0L Diesel

Oilburner

Well-Known Member
Joined
Dec 20, 2019
Messages
401
Reaction score
599
Location
You'll never find me
Vehicle(s)
Jeeps
Well I can't say what is making that sound, but it should be Easy for them to find out where it is coming from & what's causing it. I would have been under there with a long screwdriver trying to locate it :movember:
Good Luck!
 

SolarWizard

Well-Known Member
Joined
Dec 11, 2019
Messages
506
Reaction score
485
Location
SD, CA / Tampa, FL
Vehicle(s)
Model Y Performance / Diesel Gladiator soon
Occupation
energy management tech for homes and businesses
Before you go to the dealer it’d be wise to make sure your oil level is correct, just for warranty protection if nothing else
 
OP
Parratt

Parratt

Well-Known Member
First Name
Logan
Joined
Jul 13, 2020
Messages
72
Reaction score
55
Location
Edmonton Alberta
Vehicle(s)
2020 JLUD, 1988 MJ, 2010 XK (Sold)
  • Thread starter
  • Thread Starter
  • #13
Before you go to the dealer it’d be wise to make sure your oil level is correct, just for warranty protection if nothing else

Honestly with 5KKm(3000 Miles) on it, if the oil level is low that is on the dealer.
 

Advertisement




Gibson Leatherworks
 



Advertisement
Top