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Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Metal screen in the tailpipe?

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Old May 16, 2004 | 07:47 AM
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Scott Fraser
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From: Thunder Bay, ON
Metal screen in the tailpipe?

My neighbour has an '86 with a 6.9 ,and I noticed that there was a metal screen in the end of the tail pipe. What is the metal screen for?
 
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Old May 16, 2004 | 07:51 AM
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I usually see these to prevent a backfire from igniting brush, like on a tractor or lawnmower, but i don't know here. Do diesels even backfire like that?
 
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Old May 16, 2004 | 08:00 AM
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From: Thunder Bay, ON
It does look like a spark arestor, but it would take one hell of a back fire to get out of the tailpipe.
 
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Old May 16, 2004 | 08:10 AM
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On gas engines, unburned fuel can build up in the exhaust on deceleration, and it ignites, and bang.....

it's usually only when timing's way off, but maybe diesels do this too....they ignite at a lower temp, and I bet the manifold is still pretty hot.
 
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Old May 16, 2004 | 09:18 AM
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Spark arrestor
I have seen carbon build up blow out my exhaust as glowing sparks while running it hard for the first time in a long while.
I have stacks on mine so it is up where I can see them easily in my west coast mirrors.
 
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