cold start ticking
#11
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I'd like to know who at GM told you that it was the "aluminum pistons" making the noise? Since virtually all automobile engines have aluminum pistons.
With about 200,000 miles on that 5.3L powerplant there is surely a fair amount of wear and deposit accumulation in the motor. A ticking noise for a short period following start-up is normally caused by a delay in lubrication reaching the valve-train due to worn components or a lifter that is bleeding down also from normal wear and tear.
My opinion is that the noise most certainly will not result in a catastrophic engine failure so I would wait to make a repair until it comes time for an overhaul.
With about 200,000 miles on that 5.3L powerplant there is surely a fair amount of wear and deposit accumulation in the motor. A ticking noise for a short period following start-up is normally caused by a delay in lubrication reaching the valve-train due to worn components or a lifter that is bleeding down also from normal wear and tear.
My opinion is that the noise most certainly will not result in a catastrophic engine failure so I would wait to make a repair until it comes time for an overhaul.
#12
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#13
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Mine does it too, especially on cold days. I have a 99 with 77K on it. I've heard that GM excuse before. But then again, my steering shaft clicks, my leaf springs squeek, and my exhaust rattles and they told me the same thing about those noises too. (With the exhaust it was mismatched washers/spacers on the o2 sensors being loose and rattling supposedly from the factory, sigh, I hate GM sometimes).
#14
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The old Y Block Fords were known for the ticking from the exhaust manifolds. Didn't sound like a leak. It sounded like a lifter ticking till it warmed up or you tightened the manifold bolts. They didn't use exhaust manifold gaskets. I had a couple of them.