Originally Posted By: Jeffs2006EvoIX
1st off the critism isn't appreciated.
Jeff: Please note I'm not criticising you, simply the way we tend to jump to conclusions on this board without supporting facts.
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though we don't know what it was that caused the noise. What we do know is the engine flush eliminated the problem. Therefore in theory it cleaned whatever the M1 did not clean.
Do we? How many times did the engine make the noise? From the OP, it sounds like it made it that one start, you both freaked out, dumped in magic engine in a can and assume that the addition of this product resolved the issue. How do we know this wasn't a one-time event?
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I am no 2JZ Wizard but it very well could have been the oil that caused the issue.
It could have been a myriad of things, that's my point. We have no idea what caused it. Blaming the oil is no more logical than blaming the filter, the VCT controller parking the cam in the wrong spot....etc. All kinds of potential sources for noise here.
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Saying it's not is just as bad as me dating it was. It is what it is.
No, admitting we have no idea what caused it is the proper conclusion to draw here.
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The car was parked in a level garage on a 80F day when this happened. The oil was changed on average every 3k miles since new with M1.
And those two things may have absolutely zero to do with what caused the noise.
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It's my Dads choice to switch oil brands for whatever reason. No matter for what reason.
It certainly is, and I'd never argue otherwise. But that doesn't make his choice rational.
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All I was asking was what you guys thought it could have been. That's it. Not to get critised for something the critising folks don't even know what it was.
But you had already drawn a conclusion as to what it was and that part doesn't even exist on the car
Note that I haven't stated that it was a particular something else here. What I've stated is that we have no idea what it is, and anything is just as likely a culprit as the oil. We have no evidence indicating otherwise.
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All we know is the engine flush cured it. So wherever it goes the M1 goes and had gone for the last 10 yrs.
But we don't know it cured it, based on your OP. Unless the engine made the noise multiple times (which you are welcome to correct me on) then it may have been a one time occurrence.
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Anyway for those folks with help on the VVT screen we will look into that. If that is controlled by oil pressure and a mesh screen did get clogged the oil flush cleaned it almost instantly since the noise went away after a couple of seconds with the flush in the engine so this proves to me that the M1 did not Keep the engine adequately cleaned of a screen got blocked. IF that is what it is.
Or the filter bypassed, letting particulate loose and causing the issue. See, all kinds of fun ways for this to happen
Carbon happens. If some of it got down past the rings and ended up in the pan, then in the filter and then got bypassed..... It doesn't have to be a deposit that the oil "missed" or "didn't keep under control". There are parts of the engine that the oil cannot keep clean. Intake tract deposit comes loose, goes in the breather, ends up in the pan.... We could guess and guess and guess here.
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Too many varables. The noise is gone now as is the M1.
It is what it is.
Jeff
It certainly is, and that's my point, there are FAR too many variables to blame any one thing here.