RE: cold start ticking

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RE: cold start ticking - 11/16/2007 10:21:04 AM    ZX1100F1 Posts: 2429 Joined: 8/1/2006 Status: offline 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. (in reply to engine2) Post #: 11

RE: cold start ticking - 11/16/2007 2:00:39 PM    mschanha   Posts: 18 Joined: 11/16/2007 Status: offline I have the same problem with my 99 Silverado. I heard that it was common with the 5.3L Vortec. They (GM) called it piston slap caused by carbon build-up between piston and head. They said there is nothing you can do about it, but it's not a problem. Funny they would say that! (in reply to george2041) Post #: 12

RE: cold start ticking - 11/21/2007 9:39:59 AM    jcbst12   Posts: 58 Joined: 11/10/2007 Status: offline 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). (in reply to mschanha) Post #: 13

RE: cold start ticking - 11/21/2007 6:26:22 PM    Old Coot Posts: 104 Joined: 4/24/2007 Status: offline 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. (in reply to engine2) Post #: 14

RE: cold start ticking - 11/21/2007 6:48:45 PM    IAfarmer   Posts: 42 Joined: 5/9/2007 Status: offline My 08 with the 5.3 also does it. I have 21,000 miles on it. My 02 Dodge Caravan with 80,000 miles also does it, so I'm not worried. (in reply to Old Coot) Post #: 15

RE: cold start ticking - 11/23/2007 4:39:09 PM    johnboy   Posts: 27 Joined: 11/13/2007 Status: offline I change oil every 3k 10/30 or 10/40 in summer  usally a name brand pennsoil/valvoline standard oil (in reply to engine2) Post #: 16

RE: cold start ticking - 11/23/2007 6:18:18 PM    johnboy   Posts: 27 Joined: 11/13/2007 Status: offline Does anyone think Lucas oil treatment could help this situation? Please help!! (in reply to engine2) Post #: 17

RE: cold start ticking - 11/26/2007 8:19:29 AM    jcbst12   Posts: 58 Joined: 11/10/2007 Status: offline Lucas prob won't help but you can try.  I'd use the normal stuff for >100K, else I'd use the synthetic Lucas for <100K.   (in reply to johnboy) Post #: 18

RE: cold start ticking - 11/26/2007 10:05:52 AM    An89Chevy   Posts: 72 Joined: 5/11/2007 Status: offline using 5w-30 motor oil?.. bad idea in an old engine try running 10w30 synthetic.. but always run sythentic from now on... (in reply to engine2) Post #: 19

RE: cold start ticking - 11/26/2007 4:07:29 PM    johnboy   Posts: 27 Joined: 11/13/2007 Status: offline Thanks guys!!! (in reply to An89Chevy) Post #: 20

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