EGR delete - I now have loud hiss - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 10-24-2010, 06:12 PM Thread Starter
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EGR delete - I now have loud hiss

Sounds like my motor is using an air compressor to dust itself off.

I'm thinking I have an exhaust leak. Since this is my first diesel/ turbo I'm not sure if an exhaust leak always sounds like the leaks I've had on my old small blocks. It seriously sounds like I popped a tire and the air is hissing out. The hissing also doesn't start immediately on start up. After a few seconds of running it starts and the sound gets louder with higher revolutions. At first I thought I had a massive vacuum leak but the engine runs fine and is not throwing any codes. Does a leak in the Y-pipe off the rear of the turbo sound like an air compressor leak?
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post #2 of 11 Old 10-24-2010, 06:34 PM
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post #3 of 11 Old 10-24-2010, 06:34 PM
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Yep, sounds like your turbo is leaking where it meets the up-pipes. I've had this happen to mine when I did my EGR delete. It helps to leave the up-pipes and turbo mounts loose when you line up the turbo.

2004 F250 CCSB 8.5" LIFT 38" MUDGRAPPLERS ON 16X10 DC-1s
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post #4 of 11 Old 10-24-2010, 06:52 PM Thread Starter
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That's what I figgered

Well, back under to loosen things up. Crap
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post #5 of 11 Old 10-24-2010, 07:18 PM
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Make sure it's mated up perfectly before and after you put the v-band clamp on.

2004 F250 CCSB 8.5" LIFT 38" MUDGRAPPLERS ON 16X10 DC-1s
155/30s AND POWERMAX
4.30 NITRO GEARS
ANZO PROJECTOR LIGHTS
RECON SMOKED LIGHTS
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DUAL STEERING STABILIZERS
DUAL FRONT SHOCKS
4" TURBOBACK W/ MUFFLER DELETE
EGR DELETE
BB MOD W/ UPGRADED BANJO BOLTS
METH/WATER INJECTION W/ EGT AND BOOST GAUGE
FUEL PRESSURE AND TRANS TEMP GAUGES
MAGTECH DIFF COVER
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post #6 of 11 Old 10-24-2010, 08:25 PM Thread Starter
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Will do. What a pain.
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post #7 of 11 Old 10-25-2010, 04:57 AM
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Originally Posted by Stroked06SD View Post
Will do. What a pain.
Look at the bright side. It gets easier and faster every time you do it.
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post #8 of 11 Old 10-27-2010, 02:48 AM
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Does your truck run better with egr delete?
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post #9 of 11 Old 10-27-2010, 07:50 AM
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I had the same problem when I did mine. I ended up haveing to replace the y-pipe that comes off the turbo to the driver side exhaust manifold. The flex portion of it had a leak. Replaced it and running better than ever. Hope this helps.

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Edge CTS (Gauges only), ZooDad, Turbo Timer, DieselSite Coolant Filter,
RCD EGR delete, CCV reroute, Amsoil By-pass Filter, FireStone RideRite Air Springs,
FICM from Ed with Atlas 40 tune, No Kitty, FPR Blue Spring, DC XP270 Alternator


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post #10 of 11 Old 10-27-2010, 06:43 PM
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had the same problem as the OP I finally got hacked off and tightened the $h!t out of it... it broke and I replace the band loosened everything up snugged down the clamp tightened everything up and bam fixed unfortunately I learned the hard way

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