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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: Dec 2010 Posts: 62 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2010 Posts: 62 | volume and vacume test was good at carb. i still must test vacume at manifold wipper outlet if gas tank is1/2 full it runs much better than tank full ,dosnt it aliminate timing and valve adjustment.then i will check cleaning carb. i will keep you posted i do not have ez acsess to inter net.thanks | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy oldchevyguy, when it acts up remove the fuel tank cap and see if you hear a rush of air into the tank. If you do, the vent in the cap has plugged, and it's time to replace the fuel tank cap, hope that helps. | | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | Trash in the main metering jet in your carb can cause the symptoms you describe. | | | | | Joined: Jan 2010 Posts: 378 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 378 | I went one day to buy a old Harley Davidson, shift on the side of the tank old. The bike looked great, but it would not stay running unless you had it almost on full choke. I decided not to buy it thinking there was major trouble somewhere. Well, as the luck goes I ran into the man that owned it later on. He told me that it had a bad vacuum leak at the carb. Did I buy it then? Nope, he already sold it. Boo-Hoo. Check REAL good for a vacuum leak. Somewhere. Good luck. | | |
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