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post #1 of 6 Old 10-08-2012, 02:58 PM Thread Starter
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New noise developed

I recently noticed a noise that my truck makes while under light acceleration. The best way to describe it is a low pitched flute type noise, not really a whistle. It's hard to hear unless you are listening for it on purpose. It happens above 2K RPM but goes away under WOT accel. I know that my drivers side up pipe leaks at the flex joint so I'm thinking that is probably where its coming from. If it were a head gasket, I've heard the noise is loud, more of a higher pitch, and more whistle. Probably would lose coolant as well right?

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #2 of 6 Old 10-08-2012, 05:37 PM
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I hear a high pitch noise similar to what you are talking about but it only happens when i press on the skinny slighty just taking off for an example.. This sound appeared when I installed an airraid intake... Probably the culprit.. If you had head gaskets issue yes you would lose coolant
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post #3 of 6 Old 10-08-2012, 05:48 PM Thread Starter
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Oh okay, no coolant loss at all. Guess Ill be checking all the intake and CAC tubes for leaks as well.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #4 of 6 Old 10-08-2012, 06:33 PM
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If you had cac tube leaks you would know it. The truck would be very slow to respond and produce no boost. I am familiar with this noise your describing and it sounds normal with the 6.0 turbo... I hope im right in guessing your sound. Going out on a limb.
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post #5 of 6 Old 10-08-2012, 09:03 PM
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Cac boots split/cracked, exhaust flex joint cracked. Both are not uncommon.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #6 of 6 Old 10-09-2012, 01:10 PM Thread Starter
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Thanks for the help.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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