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Thread Title:

1996 6.5L emissions

Created On Monday July 23, 2007 14:18 Diesel Talk
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Posts: 1
Joined: Jul 2007

Note Monday July 23, 2007 14:18 View thread in raw text format
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New diesel owner here.

Recently had to take my 1996 GMC 3500 Sierra (2WD) with 6.5L TD in for emissions test and failed the opacity test. I'm wondering what could be some easy fixes for this before I drop it at the shop. I figure it is probably a dirty injector but not sure. Engine runs fine and plenty of power. I don't see any smoke on start or while revving the engine. Air filter is new (replaced it before the test) and did oil change before the test on the same day.

Any thoughts?

1996 6.5L GMC
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