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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: Oct 2007 Posts: 16 New Guy | | New Guy Joined: Oct 2007 Posts: 16 | OK... So even filling up the tank half full, I still manage to spill gas out of my tank. It's not like spilling out onto the pavement, just leaks down the side of the truck making a mess that I'd rather avoid having to clean once a week. I really do try and watch those hard right turns, but I'm thinking there's got to be something that I can do besides relocate the tank. Anyone got any tips? From what I can tell, the gas cap fits over the tank, but it's spongy. I'm guessing that this is because of the type of system to keep it from building up pressure?
~ChevyGeek~ '67 Chevy C10 - The Polished Turd4x2, V8 Gas, Turbo 350, 1/2 Ton, Fleetside Pic's!Seller's Photos | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | certainly something amiss, that's not a factory-fresh condition!
the cap will be vented to prevent a vacuum, but it should have a good sealing ring [rubber or cork] that will keep gas from getting out - you might also have a baffle broke loose that allows more sloshing than usual on turns
Bill | | | | | Joined: May 2007 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: May 2007 Posts: 95 | You are working on the 67 chevy C10, with the fuel tank behind the seat?
If you are.
Look for a new factory cap. No aftermarket cap i ever found worked right.
Do not overfill.
| | | | | Joined: Aug 2005 Posts: 6,378 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,378 | Cork gaskets work better than the rubber ones. My guess would be you need to replace the gasket in your cap. As Bill noted it should be vented but they are designed to avoid leaking from sloshing gas.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Jan 2008 Posts: 41 Apprentice | | Apprentice Joined: Jan 2008 Posts: 41 | Start making left turns instead....! Sorry, couldn't resist! :-) | | | | | Joined: Jun 2003 Posts: 565 'Bolter | | 'Bolter Joined: Jun 2003 Posts: 565 | Two wrongs don't make a right, but three lefts do.
"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."
1957 GMC 150
| | | | | Joined: Oct 2007 Posts: 16 New Guy | | New Guy Joined: Oct 2007 Posts: 16 | I'll admit it when I'm a newbie. I guess I should have inspected the gas cap. CRACKED RUBBER. Replaced the cap with a rubber one from a local auto store, fits nice n snug. I'm sure the cracked rubber on the cap's seal is the culprit We'll it works when I go for a real spin this evening. I do need to clean up all that residue from it spilling :p LAME!
~ChevyGeek~ '67 Chevy C10 - The Polished Turd4x2, V8 Gas, Turbo 350, 1/2 Ton, Fleetside Pic's!Seller's Photos | | |
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