Fallen Rocker arm

TONY02

MEMBER
2008 DODGE RAM
210,000 MILES

I have the truck listed above1500, that was misfiring on cylinder number 6. Upon taking the valve cover off to inspect it, I saw the rocker arm is off. I'm not sure if I can just put it back in or if I have to tear into the engine more to put it back in. Also wanted to know what would cause this rocker arm to come off all of a sudden.

6 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,552 POSTS

The rocker arm falls off because it is broken/worn, or the engine was over revved. I would get a new one and look at the camshaft to make sure the lobe is not damaged. Please send images if you are unsure of the damage. Here are instructions on how to replace the rocker arm in the diagrams below. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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Thursday, June 2nd, 2022 AT 9:25 AM

TONY02

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70 POSTS

Here are some photos of the camshaft.

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Thursday, June 2nd, 2022 AT 9:31 AM

KEN L

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47,552 POSTS

Camshafts look good, replace the rocker and let see what happens.

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Friday, June 3rd, 2022 AT 2:32 PM

TONY02

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70 POSTS

I ended up replacing the rocker arms and lifters for cylinder number 6, no more misfiring.

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Wednesday, June 15th, 2022 AT 6:09 PM

TONY02

MEMBER
70 POSTS

So, after driving the car for a while check engine light came back on for cylinder number 6. I took it apart and the rocker arm has fallen off again, not sure what else it could be.