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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!
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| | | | Joined: Apr 2000 Posts: 179 Shop Shark | | Shop Shark Joined: Apr 2000 Posts: 179 | The 'plug' is the main jet. The rod comes up under low vacuum or open throttle to increase fuel under load. If there are any check balls they would be in the inlet and maybe the outlet of the accelerator pump passages.
Joe McNeel
http://mcneelnet.com/~jmcneel/59.html
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