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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: Apr 2006 Posts: 48 'Bolter | | 'Bolter Joined: Apr 2006 Posts: 48 | I try to drive my 6400 at least once a week, but when it gets hot (180-200 degrees) it gets a really sloppy idle. The truck runs like new going down the road and even gets good gas mileage. I might rebuild the carb, but here is the question. My rig still has the governor under the carb. Can a vacuum leak develop on this device that might be causing my poor idle? Would it run better without the governor? I drive like an old man, so I'm not really worried about over revving the engine. Any thoughts? | | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | The governor works with velocity and could develop a vacuum leak and lots of them had governors removed. However a 2 speed, hydravac, stuck pcv valve can also cause a vacuum leak. And of course the normal places that can develop a vacuum leak in any engine. You may just have trash in the carb. I would rev it up and put my hand over the carb and try to suck the trash out. | | |
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