'05 Lifter Noise - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 4 (permalink) Old 10-04-2011, 10:01 PM Thread Starter
Join Date: Jul 2011
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'05 Lifter Noise

I have a '05 Cobalt 4spd auto. It has 106K on it now. I have had no real issues with it since original purchase. I now have a lifter 'tick' that never "pumps up" it seems. My question is this - are the lifters on this motor hydraulic? It's 2.2L. I use Valvoline maxlife 5-30wt. Can I just adjust it?
Also does anybody know about a service bulletin for "clunking" in the front end when going over bumps slow or at speed? Thanks
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post #2 of 4 (permalink) Old 10-16-2011, 12:56 AM
Join Date: Oct 2011
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Don't know about the lifters BUT...

The clunking is probably your lower control arm vertical bushings. I've replaced mine twice. Once @ 13,000 miles and again @ 27,000
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post #3 of 4 (permalink) Old 10-16-2011, 01:37 AM

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I just posted some info on the clunking in this thread https://www.yourcobalt.com/forums/che...-schedule.html

2009 Imperial Blue Metallic Cobalt SS/TC Sedan - "Stock":
2008 Victory Red HHR SS - Stock
2005 Chili Pepper Red Ion Redline - Stock
2007 Sunburst Orange Metallic LS Coupe - Sold
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post #4 of 4 (permalink) Old 10-16-2011, 08:31 AM
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when does the tick happen, on start up, or all the time? the timing chain tensioner is hydraulic, and u are probably at the milage to change it. might want to start there, its like a $40 dollar part. and is the easiest fix on this car if you get the upated tensioner. pull old one out put new one in, and torque to 55 ft lbs. Ecotec Timing Chain Tensioner 12608580 - Crate Engine Depot
and yes this car has hydraulic lash adjusters. not sure if you could adjust a tick out though.
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