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01-26-2014, 12:33 AM
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#1 |
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Registered User
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
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Need help figuring this out
Today I replaced the fuel pump on my truck, now the carb (quadrajet) is getting too much gas and it sputters and leaks all over the place. It ran fine until I took it back up the huge hill to get home, I was driving at 50/55mph the whole way up and with 4.10's in the back it was revving pretty high. Once I reached the top and let off the throttle it started to sputter, it limped home and I saw this when I opened the hood:
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01-26-2014, 12:34 AM
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#2 |
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Registered User
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
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Re: Need help figuring this out
Gasoline was literally dripping off the carb around the base of the air cleaner
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01-26-2014, 12:42 AM
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#3 |
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Registered User
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
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Another pic
You can see how wet the intake is from the fuel overflow
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01-26-2014, 12:46 AM
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#4 |
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Need help figuring this out
IMO, Could be a few different things...
Bad fuel inlet seat Float may need adjusted Trash in the fuel inlet not allowing the seat to close Fuel pressure too high Bad float I'd check fuel pressure first, everything else will most likely require disassembly, a rebuild, and new gaskets.
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 CHEVY ONLY
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01-26-2014, 01:07 AM
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#5 |
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Registered User
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
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Re: Need help figuring this out
Hmm how do you check the fuel pressure?
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01-26-2014, 01:20 AM
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#6 |
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Registered User
 
Join Date: Dec 2012
Location: Humble, TX
Posts: 171
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Re: Need help figuring this out
Is this an electric fuel pump?
__________________
I don't care how old or gangster you think you are; if a 3 year old hands you a play phone you answer that! I like long walks on the beach, dinner by candle light, and poking dead things with a stick. |
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01-26-2014, 01:21 AM
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#7 |
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Registered User
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
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Re: Need help figuring this out
Nope it's mechanical. It's a 1975 3/4 ton with a 350.
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01-26-2014, 01:26 AM
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#8 | |
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Need help figuring this out
Quote:
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CHEVY ONLY
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01-26-2014, 11:30 AM
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#9 |
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Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,376
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Re: Need help figuring this out
It looks like the float got stuck. I had a float stick on my convertible last summer. I took it off on the side of the road in less than 5 minutes and brought it home, took it apart, and noticed the float has a little drag to it but nothing drastic. I put it back together and it hasn't done it again. Mine was just a fluke, yours could be a bad needle and seat at the worst. It's still easier than trying to sort out an efi problem.
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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01-26-2014, 12:04 PM
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#10 |
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Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: Need help figuring this out
Check everything joe231 posted. Personally I'd look for trash in the carb. Reason I'd start there, I haven't rigged up a pressure setup yet and you did just break loose the fuel lines.
My thinking, you just increased the fuel pressure/flow with the new pump plus breaking loose the lines= far greater chance for breaking something loose. (deposit, flap of gasket, general dirt...)
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. |
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