08-19-2017, 11:58 AM | #15 | |
Drives: Hyper Blue 1SS NPP Join Date: Feb 2017
Location: So Cal
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08-19-2017, 12:08 PM | #16 | |
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Drives: 2016 red hot 2ss M6 Join Date: Nov 2011
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I guess it's possible for the lifter to only be knocking when the engine is cold or isn't lubricated.
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08-19-2017, 12:11 PM | #17 | |
Drives: Hyper Blue 1SS NPP Join Date: Feb 2017
Location: So Cal
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I am very familiar with the DI tick. I had an 08 cobalt SS, one of the first with DI and it was loud but a consistent tick tick tick. This is not normal at all. What are the chances I get a new LT1 out of this? Damn car has 13k miles and has an engine failure, although not a catastrophic failure, it's still an engine failure. My '14 Malibu has 56k on it with the LTG turbo engine and no issues. Sent from my SM-G955U using Tapatalk |
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08-19-2017, 12:27 PM | #18 | |
SoCal HT5! SD
Drives: 2016 red hot 2ss M6 Join Date: Nov 2011
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08-19-2017, 12:30 PM | #19 | |
Drives: Hyper Blue 1SS NPP Join Date: Feb 2017
Location: So Cal
Posts: 49
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08-19-2017, 01:01 PM | #20 | |
376 cubic inches of fun
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So how is it that now, more than 15 years later, it's still problem? |
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08-19-2017, 01:05 PM | #21 |
Drives: 16 2SS 6MT NPP MRC / 15 K1300S Join Date: Mar 2016
Location: NW of Austin
Posts: 1,034
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I wonder if this failure is more prevalent in autos where the system is actually used?
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08-19-2017, 01:15 PM | #22 |
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Drives: Duramax Join Date: May 2017
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Send an a well used oil sample into Blackstone ASAP. Debris from a failed AFM lifter, (and/or collateral engine damage) will show up.
https://www.blackstone-labs.com/ |
08-19-2017, 01:18 PM | #23 | |
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Drives: Duramax Join Date: May 2017
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GM has had a problem with their AFM/DoD on several GM engines for several years now. I'd delete AFM/DoD in a HP Engine. The issue is too many small parts failures at RPM. We're already paying a Gas-Hog tax, they should allow an AFM Delete in Factory built SS and ZL1s. |
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08-19-2017, 01:27 PM | #24 |
Drives: Wild Cherry LT1 Join Date: Dec 2016
Location: Massachusetts
Posts: 1,925
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I'm not going to hit the panic button (not yet), but mine sounds the same exact way. For the noise to be as evident as the one shown here, I sometimes have to very lightly rev the engine just after start up (been noticing it for 2 days) It does go away after a few minutes My car has 3700 miles...
I'm going for ride now and not worrying about it... been thinking about trading up to a Zl1 vert anyway. Hopefully the OP comes back from the dealer with good news. Let us know... |
08-19-2017, 01:36 PM | #25 | |||
Drives: Hyper Blue 1SS NPP Join Date: Feb 2017
Location: So Cal
Posts: 49
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08-19-2017, 01:49 PM | #26 |
Drives: Wild Cherry LT1 Join Date: Dec 2016
Location: Massachusetts
Posts: 1,925
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As loud or louder... sounds fine now.(warmed up) One thing to note though is my car sputters like it's missing a cylinder, for 1-2 minutes while cold. If I wait for it to warm up, all is good withe world.
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08-19-2017, 01:50 PM | #27 |
Drives: Hyper Blue 1SS NPP Join Date: Feb 2017
Location: So Cal
Posts: 49
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08-19-2017, 05:11 PM | #28 | |
376 cubic inches of fun
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