LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Will Descreening the MAF cause a knock

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Old 07-12-2006, 02:55 PM
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Re: Will Descreening the MAF cause a knock

ok so I take it this knock is not a little problem at all.
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Old 07-12-2006, 02:58 PM
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Re: Will Descreening the MAF cause a knock

The LT1 exhibits a bit of piston slap. Usually, you only hear it when the engine is cold. You appear to be hearing it when the oil is warmed up.

What oil weight are you using?
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Old 07-12-2006, 02:59 PM
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Re: Will Descreening the MAF cause a knock

Originally Posted by kaoticcamaross
ok so I take it this knock is not a little problem at all.

It may just need a valve adj.
Hard to say over the Internet.
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Old 07-12-2006, 03:11 PM
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Re: Will Descreening the MAF cause a knock

10W30 from Penzoil. I was using the mobile 1 before this sound developed. I know it's hard to know just by my decription cause i'm not much on tech. I'll see if I can get a sound clip tonight and put it up on here.
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Old 07-12-2006, 03:13 PM
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Re: Will Descreening the MAF cause a knock

Originally Posted by kaoticcamaross
10W30 from Penzoil. I was using the mobile 1 before this sound developed. I know it's hard to know just by my decription cause i'm not much on tech. I'll see if I can get a sound clip tonight and put it up on here.

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Old 07-13-2006, 11:45 AM
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Re: Will Descreening the MAF cause a knock

ok went to use my video camera to capture the sound for you guys and it didn't make it. So I waited till this morning to capture the sound. It wasn't making it at the idle this morning in nutral either but was idling around 1000 on start up. Then while driving to work stoped at a red light I head the knocking again. So i dunno whats the deal. When i heard the sound it was idling around 600-700
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