[TaxiGirl]

This is the second time that this has happened. Last time, i had a mechanic replace #3 and #5 rocker arms ($500). and later when the familiar tick came back I used MMO and no longer had a problem. Now, the tick is back with a vengence. I was trying to hold out until this Thursday. I have a loss of compression as well when accelerating. And I still have a high pitch or medium high pitched gurgling sound when accelerating also.

Btw i changed my oil yesterday, when mechanic opens the head, does he have drain oil out to replace rocker arms?

2011 dodge grand caravan 3.6 Pentastar

 

[dana44]

No, oil does not need to be drained.

 

[ImperialCrown]

Broken rocker arms were likely caused by the valves binding in the guides, not the rocker arms themselves. The head should have been replaced instead of the rockers at the time.
https://customerconnect.custhelp.co...MjElMjE=/filename/(X56)_Owner+Letter_6392.pdf

 

[TaxiGirl]

Broken rocker arms were likely caused by the valves binding in the guides, not the rocker arms themselves. The head should have been replaced instead of the rockers at the time.
https://customerconnect.custhelp.com/ci/fattach/get/128866/0/session/L2F2LzEvdGltZS8xNDk0OTY4OTQ4L3NpZC9mVUJXSkpQajhMX0ZTOHBFWUlaREJXdUhMRkxhSXFvUGcyeURqOVJJMjBYT2E0MlVmUFNlVEtSM21SSDJaSHNjTWpPRkZNaHphaGdENE9KSUV1ZHhDSUJRbGV3QloxX0h1YUMxX0xRd0pCeUhyOV9OdmpaVDNGVWclMjElMjE=/filename/(X56)_Owner+Letter_6392.pdf

I have already replaced the left cylinder head around 150K miles. Now, I have over 317K miles. Are you saying that I should replace the head again?

 

[ImperialCrown]

It's possible that it needs a head replacement. I would get a second opinion. Preferably at the dealer that installed it?

 

[Bob Lincoln]

I have already replaced the left cylinder head around 150K miles. Now, I have over 317K miles. Are you saying that I should replace the head again?

Was it just a junkyard pull, or was it machined/reconditioned? Why was the left head replaced at that time?

 

[TaxiGirl]

Was it just a junkyard pull, or was it machined/reconditioned? Why was the left head replaced at that time?

It was replaced under the WARRANTY at the dealership right before the warranty ran out. i had a number 3 ( i think) misfire. of course, I am talking about Clay Cooley Dodge. and I did not know that they were not really a real Dodge dealership at that time, and since they are sporting the Mopar name and call themselves Clay Cooley Dodge. at that time I did not know any better.

 

[TaxiGirl]

Was it just a junkyard pull, or was it machined/reconditioned? Why was the left head replaced at that time?

Should the supposedly new left cylinder head last longer than another 157k miles.?

 

[chuckt]

OMG! I had to educate myself since I have not messed with rocker arms since the 89's 3L and my 69 Nova's small block. The rocker arms in the 3.6L look like something out of a Legos box. Unbelievably tiny and frail compared to what I am used to seeing. Being a retired ME, I can understand that engineering has progressed with FEA and other tools for design but these parts look like they should be stamped with "Singer Sewing Machine Company" on them.
I pulled up this youTube of the situation.

View: https://www.youtube.com/watch?v=MPly9YAM_1E

The analysis of the valve assembly operation must be minutely studied when considering the forces and speeds of operation. And QC of the roller and pin holding it in the rocker arm must be high to prevent premature failure.

 

[TaxiGirl]

OMG! I had to educate myself since I have not messed with rocker arms since the 89's 3L and my 69 Nova's small block. The rocker arms in the 3.6L look like something out of a Legos box. Unbelievably tiny and frail compared to what I am used to seeing. Being a retired ME, I can understand that engineering has progressed with FEA and other tools for design but these parts look like they should be stamped with "Singer Sewing Machine Company" on them.
I pulled up this youTube of the situation.

View: https://www.youtube.com/watch?v=MPly9YAM_1E

The analysis of the valve assembly operation must be minutely studied when considering the forces and speeds of operation. And QC of the roller and pin holding it in the rocker arm must be high to prevent premature failure.

The rocker arms do fall off or break and start making noise.. I had #3 and #5 rocker arms replaced before. Now, getting ready to replace Camshafts, phazers, timing chains, guides, tensioners. etc. hopefully the ticking noise will stop.

 

[GLHS60]

These rockers look to be the same design as used in prior Engines going back to the 1988 2.2/2.5.

I guess they reached the limit of "lightness" as I haven't really heard of rocker failures in even 2.7's.

Any chance you just need rockers or are the cams tore up as well??

Best of luck TaxiGirl!!

Thanks
Randy

 

[TaxiGirl]

These rockers look to be the same design as used in prior Engines going back to the 1988 2.2/2.5.

I guess they reached the limit of "lightness" as I haven't really heard of rocker failures in even 2.7's.

Any chance you just need rockers or are the cams tore up as well??

Best of luck TaxiGirl!!

Thanks
Randy

Well, I have replaced left cylinder head under warranty and later replaced #3 AND #5 broken rocker arms.later ticking noise was back and I remedied it will MMO for at least 6 months if not longer, Now, 317K plus miles, ticking again and the MMO does not work, so, I am replacing all of that stuff per a master mechanic, who does not work for Dodge and who is mainly just listening to the noise. Expensive fix but. if it fixes it I will be happy if it does not. I will just move onto the next thing. thank you for commenting.

 

[GLHS60]

If an oil additive made any difference I would be thinking possible lash adjuster issues??

Basically they are "hydraulic lifters" that support the rockers.

As they are hydraulic, occasionally oil additives, or even different oil can quiet them up.

Oil additive wouldn't quiet a broken rocker if you get my drift.

Not criticizing, only sharing my thoughts.

I haven't any 3.6 experience yet but have an early production one and like to follow 3.6 issues.

Thanks
Randy

 

[GLHS60]

According to the video chuckt posted broken rockers are common.

The cams in the Engine in the video look fine, possibly the 3.6 rockers have a shorter life span than prior units.

Thanks
Randy

 

[TaxiGirl]

According to the video chuckt posted broken rockers are common.

The cams in the Engine in the video look fine, possibly the 3.6 rockers have a shorter life span than prior units.

Thanks
Randy

Maybe but now I am worried about lash adjusters.. lol

 

[GLHS60]

Now I see there is a StarCase on this issue: STAR Case bulletin, S1309000016

CAMSHAFT/FOLLOWER REPLACEMENT | Mopar Magazine (at https://www.moparmagazine.com/2016/06/camshaftfollower-replacement/ )

Appears to cover rockers and possibly lash adjusters.

I'm curious if the replacement parts are better??

I see they only replaced the collapsed lash adjusters.

Melling JB7525 Lash adjuster : $5.99 Melling JB-7525 Engine Lifter for 11-14 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L Engine (at https://www.quadratec.com/products/51001_0208.htm )

Melling MR1332 Rocker: $7.99 Melling MR-1332 Rocker Arm for 11-14 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L Engine (at https://www.quadratec.com/products/51103_0225.htm )

Thanks
Randy

 

[TaxiGirl]

Now I see there is a StarCase on this issue: STAR Case bulletin, S1309000016

CAMSHAFT/FOLLOWER REPLACEMENT | Mopar Magazine (at https://www.moparmagazine.com/2016/06/camshaftfollower-replacement/ )

Appears to cover rockers and possibly lash adjusters.

I'm curious if the replacement parts are better??

I see they only replaced the collapsed lash adjusters.

Melling JB7525 Lash adjuster : $5.99 Melling JB-7525 Engine Lifter for 11-14 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L Engine (at https://www.quadratec.com/products/51001_0208.htm )

Melling MR1332 Rocker: $7.99 Melling MR-1332 Rocker Arm for 11-14 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L Engine (at https://www.quadratec.com/products/51103_0225.htm )

Thanks
Randy

I was just looking at this issue via this link CAMSHAFT/FOLLOWER REPLACEMENT | Mopar Magazine (at https://www.moparmagazine.com/2016/06/camshaftfollower-replacement/ )
I am nervous because I like to be right in the middle of what's going on with my vehicle and I will not be allowed to
do this because of the ole insurance excuse. I wished I had time and to do it myself. My biggest fear is that all of parts that I ordered may not actually get put on my van, I have real trust issues. Even though this mechanic helped me out before. I know by law I can see all of the parts that were taken out of mine and I guess that is the only thing I can do

 

[TaxiGirl]

Now I see there is a StarCase on this issue: STAR Case bulletin, S1309000016

CAMSHAFT/FOLLOWER REPLACEMENT | Mopar Magazine (at https://www.moparmagazine.com/2016/06/camshaftfollower-replacement/ )

Appears to cover rockers and possibly lash adjusters.

I'm curious if the replacement parts are better??

I see they only replaced the collapsed lash adjusters.

Melling JB7525 Lash adjuster : $5.99 Melling JB-7525 Engine Lifter for 11-14 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L Engine (at https://www.quadratec.com/products/51001_0208.htm )

Melling MR1332 Rocker: $7.99 Melling MR-1332 Rocker Arm for 11-14 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L Engine (at https://www.quadratec.com/products/51103_0225.htm )

Thanks
Randy

I went ahead and added 4 of the valve adjusters to my order that has not shipped yet. Thanks Randy

 

[GLHS60]

Keep us posted Butterfly and best of luck!!

Thanks
Randy

 

[TaxiGirl]

According to the video chuckt posted broken rockers are common.

The cams in the Engine in the video look fine, possibly the 3.6 rockers have a shorter life span than prior units.
Thanks
Randy

View: https://youtu.be/h6Gl5uAmAZI