Ticking since last oil change - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-06-2010, 10:44 PM   #1
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Question Ticking since last oil change

The top of my engine'* always had a little ticking to it, especially since my UIM failure a few years ago. But since my last oil change, when I took out the winter 5W30 and put in the recommended 10W30, it'* gotten a bit louder. The ticking seems to vary with RPM, and sounds like it'* coming from the rear valve cover (but I can't really tell).

Car drives just fine. No check engine lights. Kicks *** on I-95 during rush hour when everyone'* going 80 mph in bumper to bumper traffic. (It'* a Connecticut thing. We don't know how we do it, we just do. )

I suppose it'* time for a can of Seafoam and a permanent switch to 5W30. Any input on this? Or could it be a loose exhaust manifold?
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Old 05-06-2010, 10:48 PM   #2
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If the ticking started after changing the oil, and is connected to RPM, it very well could be a bad lifter. Seafoam followed by a oil change back to 5w30 might loosen it up. If not, you may need to change the lifters.
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Old 05-06-2010, 10:55 PM   #3
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If I've got a slow or stuck valve, wouldn't there be a shaking or a misfire?
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Old 05-06-2010, 10:56 PM   #4
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No, not really. A weak lifter just means it'* not opening the valve all the way, then when it closes there'* a little play, that'* the tick.
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Old 05-07-2010, 02:11 AM   #5
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looks like your changing lifters when you do your LIM gasket
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Old 05-07-2010, 02:23 AM   #6
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Well then. This is now a thread about lifters. How involved is the process of changing a lifter?
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Old 05-07-2010, 02:35 AM   #7
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take off LIM, take off rockers, pull out push rods, pull out lifter, assemble in the reverse process.
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Old 05-07-2010, 08:46 AM   #8
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what kind of oil are you using? do you have good intervals between changes. you could try changing to Castrol HM. I had the same experience at about the same mileage put in Castrol HM 10/30, tick gone 3 years now not even a slight tick.
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Old 05-07-2010, 08:56 AM   #9
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Lifters are easy. If your already changing the LIM gaskets, your right there. 2 bolts and remove the lifter guide. Then lift out the lifters. Drop in new ones and put lifter guide back on and replace the 2 bolts, done.
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Old 05-07-2010, 09:01 AM   #10
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Quote:
Originally Posted by Danthurs View Post
Lifters are easy. If your already changing the LIM gaskets, your right there. 2 bolts and remove the lifter guide. Then lift out the lifters. Drop in new ones and put lifter guide back on and replace the 2 bolts, done.
Plus removing the valve cover and the rockers. It'* tough to pull lifters with the rockers on da motor.

Colin.. nice thing is I have a pile of reusable rocker bolts, you'll need a set and I'll sell you a set cheap. Oh wait..I'm probably on this job huh?
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