Ticking Noise Under High rpms - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-22-2008, 01:46 AM   #1
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Question Ticking Noise Under High rpms

I have a 94 SE, and recently noticed a ticking that I first assumed was lifters, used the screw driver and heard nothing to help me narrow it down. I had a similar problem with another car and in the long run it ended up to be a couple bad/spun rod bearings. Wanting to avoid that problem I went ahead and change all the rod bearings and for 125000 they actually looked quite good, just a couple rough spots on two of them but everything else looked fine. Checked the clearences with some Plastigauge and I'm right in the middle of the range. I don't hear a thing when I start the car or when the rpms are under 2000 or when I rev it up slowly. If I rev it quickely, or when I'm accelerating, once the rpms are up to about 2000 I hear a rather anoying tick that sounds almost exactly like a lifter tick. No oil additives/cleaners have seemed to make a difference with it either. Also when the rpms are over 2000 even up to 3000 when I'm slowing down like in 2nd or 3rd gear (foot of the gas) I don't hear it then either. Being that it'* not rod bearings and not lifters (at least from listening with a screw driver) what could it be? And how do I fix it?
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Old 11-22-2008, 10:18 AM   #2
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Perhaps a exhaust leak? Or are you sure it'* a metallic clicking.
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Old 11-22-2008, 01:17 PM   #3
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It sounds like a metalic click, but from reading some other threads it sounds like and exhaust leak can sound like that too. Whats a good way to check?
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Old 11-22-2008, 01:34 PM   #4
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Have you ever done a seafoam on your car? From what I've heard smoke will come out from any leaks and you will see it.
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Old 11-25-2008, 06:06 AM   #5
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Check your exhaust manifold for leaks, seafoam is good way to start or you prolly could use water.
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