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Mod | | | Forums66 Topics128,072 Posts1,055,906 Members48,429 | | 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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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#41313 10/19/2004 11:51 PM | Joined: May 2001 Posts: 71 Wrench Fetcher | | Wrench Fetcher Joined: May 2001 Posts: 71 | I've had two different Rochester 1-bbl carbs on my 216 and both of them have behaved this way. The needle valve sticks and causes flooding. If I pound on the fuel inlet area, it frees up the needle and everything works fine. I've had the top off the carb a number of times, removed the needle and seat, cleaned everything out, even reamed it a bit to give a little more clearance, but the problem persists. Any ideas? | | |
#41314 10/20/2004 1:26 AM | Joined: Nov 2002 Posts: 2,766 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,766 | If you start the vehicle infrequently, the varnish residue formed upon the evaporation of modern fuel can cause this problem. Solution - have more fun - start the vehicle daily.
Jon.
Good carburetion is fuelish hot airThe most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes!The Carburetor Shop | | |
#41315 10/20/2004 3:36 AM | Joined: Aug 2001 Posts: 1,299 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 1,299 | Any rubber lines in the fuel system? Seems that when they get old, the insides deteriorate and punish you with little black chunks that find their way to the needle and seat. I went to the gross-jet needle and seats described in the tech article on multi rochesters on inliners site. They have been very reliable so far. | | |
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