3.8 JK Diesel?

Jellymon

Member

• Jul 7, 2020

• #1

Is a gas 3.8 supposed to sound like a diesel? Lol. Sounds loudest where engine and tranny meet.

 

Last edited: Jul 7, 2020

BaddestCross

Active Member

• Jul 7, 2020

• #2

Jellymon said:

Is a gas 3.8 supposed to sound like a diesel? Lol. Sounds loudest where engine and tranny meet.

Click to expand...

Probably blown exhaust manifold and/or something else in the exhaust piping.



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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

 

Jellymon

Member

• Jul 7, 2020

• #3

I replaced manifolds last year, I’m going to check them again though. It only sounds like this after it heats up.

 

BaddestCross

Active Member

• Jul 7, 2020

• #4

Jellymon said:

I replaced manifolds last year, I’m going to check them again though. It only sounds like this after it heats up.

Click to expand...

They have a tendency not to last very long. What did you use to replace them?



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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

 

Jellymon

Member

• Jul 7, 2020

• #5

I replaced them with the stock style from crown.

 

BaddestCross

Active Member

• Jul 7, 2020

• #6

Jellymon said:

I replaced them with the stock style from crown.

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I ask because both of mine need replacement and I haven't decided to get the Crowns or Mopar. Let me know what you find when you look at them.



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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

 

Jellymon

Member

• Jul 9, 2020

• #7

Just pulled the heat shields and checked the manifolds. Everything looks good, no cracks anywhere and all the bolts are nice and tight. Looks like the crown manifolds can last at least a year.

 

BaddestCross

Active Member

• Jul 9, 2020

• #8

Jellymon said:

Just pulled the heat shields and checked the manifolds. Everything looks good, no cracks anywhere and all the bolts are nice and tight. Looks like the crown manifolds can last at least a year.

Click to expand...

Good to hear... Were you able to locate the issue though?



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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

 

Jellymon

Member

• Jul 9, 2020

• #9

Didn't find anything. It runs great, it's just noisy. I've looked at everything at my skill level. I might have to eventually take it to a shop and get it looked at. Or just RTF it.......