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Old 11-09-2018, 08:09 AM   #1
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Noise from Engine

Hi,
On a couple of occasions on our trip south I thought I heard a shrill noise from the engine area. Was not able to reproduce it when parked and running engine at 1500 rpms. The first thing I will look at is the tensioner but want to ask if anyone has experienced a similar noise and what were the causes. Looking at alternator? Ac compressor? If I remember the 2 times I thought I heard the noise it was using the engine break Jake. This is on an 05 Windsor with 04 ISL 400
Don Barber
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Old 11-09-2018, 08:20 AM   #2
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Check exhaust manifold at #3 cylinder for leaks...we all get it eventually, poor design.
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Old 11-09-2018, 05:09 PM   #3
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Or a cracked manifold, I had to replace mine ~4 years ago.
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Old 11-10-2018, 07:18 AM   #4
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Same noise for us. We've had to replace our exhaust manifold twice.
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Old 11-10-2018, 09:11 PM   #5
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My 400ISL was doing the same thing.... broken exhaust manifold. This is fairly common on this engine. I had the diesel shop do the job because my Endeavor is a rear radiator and itís tough to get to the exhaust manifold...
Good luck with it.
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Old 11-11-2018, 09:52 AM   #6
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Look for soot marks around the exhaust manifold. I just replaced my gaskets yesterday. Blew number 3 gasket.


Good luck


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