Bad Cam Follower? - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 6 (permalink) Old 06-17-2014, 05:51 AM Thread Starter
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Bad Cam Follower?

So I think I have a bad cam follower or lifter or whatever we are calling them these days... Any idea how big of a job this might be? I was thinking of just putting a paint mark on the cam sprockets and chain, removing the tensioner, popping the cams off, rip out the (hopefully obvious) bad follower and slap in a new one.

Anything else I should know?

Here is what my engine sounds like:

http://youtu.be/wwbK0qrcgmM


I just bought the car a few months ago and put it on the road last week (I was busy…). I could not really notice it when I bought it because it had a good exhaust leak at the down pipe. I also replaced the tensioner for the new revised one. In hindsight, I should of looked at the followers when I had the valve cover off to activate the tensioner..

Last edited by fierodough; 06-17-2014 at 06:02 AM.
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post #2 of 6 (permalink) Old 06-17-2014, 04:04 PM Thread Starter
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Took the valve cover off and it is a loose / bad cam follower.

https://www.youtube.com/watch?v=xhF9wl6PKvU

Now to tackle this on the weekend. Looks like I need to pull the came to get to the follower.

more to come!
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post #3 of 6 (permalink) Old 06-20-2014, 02:16 PM Thread Starter
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Fixed!

So it was not the followers but a few seized hydraulic valve lashers.



-Remove the valve cover.
-I zipped tied the timing chain to the cam sprockets but I don't feel it was necessary... Better safe than sorry I guess.
-I removed the cam cap on the driver's side of the engine
-I loosened the cam bearing caps from the driver's side to the passenger side in order to slightly tilt the cam to get to the followers. (do not remove the cam, just tilt it slightly to get to the followers, it does not take very much)
-Remove the follower that was previously determined to be loose.
-Under the follower you will see a nipple. that is the tip of the hydraulic lasher. Remove it gently with needle nose pliers.
-Install the new hydraulic lasher.
-Place the follower back over the lasher and the valve.
-Gently re-torque the cam (progressively) to 89 inch lbs. (that's about 7.7 to 8 ft. lbs. )
-REMOVE ZIP TIES!
-Turn engine over by hand to make sure all is good.
-Put valve cover back on.
-Crank engine with ignition module unplugged to build oil pressure.
-Start engine.

#winning #nomoretickingecotec

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post #4 of 6 (permalink) Old 06-20-2014, 02:18 PM
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Good job!

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post #5 of 6 (permalink) Old 06-20-2014, 02:51 PM
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Did you take pictures? We like pictures....

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post #6 of 6 (permalink) Old 06-20-2014, 05:27 PM Thread Starter
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Sorry, I did not take pictures. I was too nervous about messing my cam timing as I read all the nightmares from others. To be honest, it was much simpler than I thought and as long as you are careful, there is no need to worry about cam timing.
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follower , knock , lifter , ticking , valve

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