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Mod | | | Forums66 Topics128,078 Posts1,055,938 Members48,430 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Sep 2005 Posts: 1,028 'Bolter | | 'Bolter Joined: Sep 2005 Posts: 1,028 | I have a dumb question. I was messin with the vacuum wipers to try to get them to work. I had them on quite a while (5 to 10 minutes after a 20 minute drive) with the truck idling.
As I was messin with them I noticed some grey smoke coming out the exhaust. I revved it up and it ran a little rough and more smoke. It seemed to be missing some too puffin out the tail pipe.
It did not seem like oil smoke or unburned fuel. I was wondering if I since I was running the wipers so long at idle and they suck up vacuum that maybe that would cause some smoke condition...ie a rich fuel mix.
This engine is new and never smoked before.
Rich
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