Start up rattle

[Gigglebutton]

When I start My TJ first thing in the morning, It makes a rattling sound for a second, them goes away for the rest of the day.
Doesn't do it every morning, maybe 4 out of 7 days.
Do these have a hydraulic chain tensioner or something similar that may be sticking?
Cheers

 

[UPJOHN]

The lifters rattle on these engines when cold sometime. Once the pump up they quiet down.

 

[Chris]

This is normal. Shit, I've never seen a TJ that didn't do this. I was skeptical at first, but I spoke with @mrblaine about this and he convinced me that adding some marvel mystery oil took care of this start up ticking for good on his rigs.

Maybe he'll chime in.

 

[Gigglebutton]

Its more of a rattle than a ticking. Quite loud

 

[UPJOHN]

My xj rattled, and it was the idler for the serpentine belt. It got quieter when it warmed up, but never went away.

 

[Stinger]

Its more of a rattle than a ticking. Quite loud

Lifter bleed down. Unless it is an 05/06 4.0 liter. Then it MAY be the start of OPDA failure.

 

[Gigglebutton]

Its an 04....Whats an OPDA?

 

[UPJOHN]

Its an 04....Whats an OPDA?

Oil pump drive assembly.

 

[Stinger]

Oil pump drive assembly.

Depending on WHEN the engine was assemble will prove as to wether it MAY be susceptible to this design flaw. Goggle it. There are a ton of write up about this crap put out by jeep- or what the hell ever company they were serving at the time.

 

[Chris]

Its an 04....Whats an OPDA?

No need to Google it, the info you seek is right here on this forum:
What is an OPDA and do I need to change mine?

 

[badlieutenant]

Lifter bleed down. Unless it is an 05/06 4.0 liter. Then it MAY be the start of OPDA failure.

OPDA is more of a screech than a rattle I thought

 

[Chris]

I think it can be anything. I would check for noise coming from the OPDA area, and if it is coming from that area I'd get on that stat!

 

[Stinger]

No need to Google it, the info you seek is right here on this forum:
What is an OPDA and do I need to change mine?

Doesn't a Google search show this forums results?

 

[Stinger]

OPDA is more of a screech than a rattle I thought

Bro it depends on how much damage has been done. Mine did one of each.

 

[Chris]

Doesn't a Google search show this forums results?

Among many others. I just tried to consolidate all the info to one thread. On other forums there's threads 50+ pages long with the info littered throughout it because the thread has been going since 2008 or so ever since the problem first came about.

 

[badlieutenant]

Bro it depends on how much damage has been done. Mine did one of each.

Ouch! That's scary.

 

[Gigglebutton]

Thanks for your help guys.

 

[badlieutenant]

I just want you to know that it's "normal" and very common for a manual tranny LJ/TJ to rattle @ idle.

Engage the clutch and it goes away, on mine at least. Same for every other TJ/LJ with a manual that I've been in.

 

[Stinger]

I just want you to know that it's "normal" and very common for a manual tranny LJ/TJ to rattle @ idle.

Engage the clutch and it goes away, on mine at least. Same for every other TJ/LJ with a manual that I've been in.

So did mine.