2006 dodge 3.3 timing chain slop.

[Dana67Dart]

I did some long overdue maintenance on our 2006 Dodge Grand Caravan, 3.3 V6, 159,000 miles. Mostly a grocery getter with the occasional 100 mile trip to Denver and back.

We are the original owners, and it has been relatively well maintained.



Valve cover gaskets
Intake plenium gaskets
Auxiliary heater core tube/hose replacement
And the oil pan gasket

While looking at the very clean I sides of the crank case I noticed what to me looks like a slack timing chain.

The bottom of the oil pan was clean, no sludge or other deposits, or chunks of mystery materials.

I filtered the oil I removed through a paint filter and nothing remarkable in the filter.

No for the slack...

The pulling side was tight, but the following side had enough slack that a 10mm box wrench pressed in the middle of the chain deflected enough to make the opposite side of the box wrench to be flush with where the chain would be if it was tight.

My guess is about 3/8".

There was no visible signs of issues, from looking at YouTube videos it appears to be a steel cam gear.

And this engine does not have a tensioner

Before I cry and start pulling the front of the engine apart, I figured I'd ask if the slack is normal?

Thanks all

 

[Demonracer]

Doesn't that have a timing chain tensioner on it?

 

[wmdj5]

Drive it.
Those 3.3 pushrod engines are pretty reliable.
Yep, steel gear and no tensioner. Cam in block, relatively short chain.
Remember those are not OHC.
I've seen well over 300K on those with no issues on timing chains.
I bet if you put a new chain on it, you'd probably see close to the same slack.

 

[Dana67Dart]

Doesn't that have a timing chain tensioner on it?

No. When I saw it loose I expected to find broken bits of tensioner in the pan. But nothing.

And all my YouTube searches show no tensioner

 

[Dana67Dart]

I bet if you put a new chain on it, you'd probably see close to the same slack

That's exactly what I DON'T want to see!

Thanks for the input!

 

[wmdj5]

Honestly, if you feel the need to do preemptive maintenance at 160K, replace the in-tank fuel pump if you haven't already.

 

[Dana67Dart]

Honestly, if you feel the need to do preemptive maintenance at 160K

Thanks.

I typically take the "if it ain't broke don't fix it" stand but a timing chain can go from a 60.00 part to a 4000.00 rebuilt engine in a heart beat.

You sound like you have had that happen.