GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Baffaled with noise

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Old Sep 25, 2012 | 04:16 AM
  #21  
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Originally Posted by AKlowriderZ71
Broken piston.
That crossed my mind as well. I just hated to jump to that since I couldn't tell much from the noise.
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Old Sep 25, 2012 | 04:22 AM
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Originally Posted by phasemaster1
Is there room in there to pull bolts out and run it?
I believe the pilot still engages the crank somewhat when bottomed out in the trans, so that may not be a safe idea. But the noise sounds no bueno, man

It could be that procharger...those things always sound like they are on the verge of exploding anyway
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Old Sep 25, 2012 | 06:59 AM
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Originally Posted by smokeshow
I believe the pilot still engages the crank somewhat when bottomed out in the trans, so that may not be a safe idea. But the noise sounds no bueno, man

It could be that procharger...those things always sound like they are on the verge of exploding anyway
If it engages, I wouldn't risk it then.

All I can hear is procharger.

Try a compression check if it is a piston. Usually they break where the rings butt, and could lower the reading.
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Old Sep 25, 2012 | 03:19 PM
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**** I hope its something real stupid, my next venture compression test.
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Old Sep 25, 2012 | 03:33 PM
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My thought was that maybe something inside is diverting the air in away that could cause the air to have a "whistle" like effect esspecialy since you mentioned water or condensation in there.
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Old Sep 25, 2012 | 03:45 PM
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when I thought it might have been a exhaust manifold gasket and changed them I also changed the plugs and they didnt look fouled or coated with oil. Porcelain was also white I was looking for any abnormalities.
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Old Sep 25, 2012 | 03:48 PM
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Originally Posted by 03sierraslt
That crossed my mind as well. I just hated to jump to that since I couldn't tell much from the noise.
Yeah, I heard the noise right away. Piston speed, and sounds exactly like 2 others that I had in my shop, with broken pistons.
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Old Nov 8, 2012 | 07:34 PM
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Finally pull the heads pistons look good. Will take a better look tomorrow and clean the carbon crap so I can rotate engine and check cylinder walls for damage.
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Old Nov 25, 2012 | 05:05 AM
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Check/Clean your throttle body. Carbon build-up can make them whistle.
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Old Nov 25, 2012 | 07:39 AM
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Sounds like you ate a lifter.I hope not
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