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#1 |
Registered User
Join Date: Dec 2005
Location: Kalifornia
Posts: 338
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New fuel system startup
New gas tank, fuel lines, and mechanical pump. Is there a way to prime the fuel system to prevent excessive cranking or just prime the carb and go for it?
72 C10 350 |
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#2 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,905
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Re: New fuel system startup
Drizzle some fuel down the primaries and crank it up.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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#3 |
68 C10 Longbed
![]() Join Date: Sep 2006
Location: Naples, Florida
Posts: 520
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Re: New fuel system startup
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#4 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: New fuel system startup
Ditto. This is all I ever do when staring one up that has been sitting a while.
I just pour whatever gas I have laying around down the carb. The engine coughing and spitting on that gas is usually enough to get things primed. And yes, this is WAY better than cranking on the starter.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#5 |
Registered User
Join Date: Apr 2010
Location: So Cal
Posts: 1,437
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Re: New fuel system startup
If you have the earlier truck without a evap system that uses a vented gas gap, you can use air pressure to push gas from the tank through the hoses, through the fuel pump and into the carb. Wrap a rag around your air nozzle and hold it into the tank filler neck. Give it a couple of quick shots of air and hold the rag tight.
Don't go crazy. You'll hear the tank "oil canning". Give it a couple of shots and check for accelerator shots in the carb. Another method. Most pre- smog carbs vent the fuel bowls into the neck of the carb. On a non-smog Edelbrock (without the side tube for the charcoal cannister) there are two squarish holes on top that you can pour fuel into the float chambers. Use a really small tipped funnel or an old hand oiler will work. A couple of tablespoons is all.
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'67 GMC 2500, 292, 4spd, AC |
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#6 |
Registered User
Join Date: Dec 2005
Location: Kalifornia
Posts: 338
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Re: New fuel system startup
It's a 72 C10 with the eec setup. Running a quadrajet. Ideas?
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#7 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,114
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Re: New fuel system startup
Fuel into the vent shown by arrow. A full bowl will idle the engine for about a minute depending on cubic inches and other things .
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#8 | |
Senior Member
![]() Join Date: Dec 2009
Location: TN.
Posts: 8,092
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Re: New fuel system startup
Quote:
![]() I used an old vacuum advance and dissected it. It makes a great funnel for filling the carburetor.
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________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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#9 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: New fuel system startup
.97 cent Plastic Squeeze Dispense Bottle at Walmart .
https://www.walmart.com/ip/Mainstays...from=topicPage
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#10 |
Registered User
Join Date: Jul 2008
Location: Washington, NC
Posts: 93
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Re: New fuel system startup
I also have a boat, so I had this tool handy, but I used the vacuum pump/tank deal used for oil changes (it's like a pump sprayer in reverse basically) and used that to the fuel hose going to the fuel pump to first pump all the bad gas out, then hooked it up near the carb, etc.. to prime everything so I wasn't doing a bunch of dry cranking. I also dumped chainsaw gas in the carb so it would have a little bit of oil to it to lube stuff. Mine had been sitting for years though, not sure about yours.
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