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#1 |
Senior Member
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Location: Lewisville, Nc
Posts: 10,234
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what carb?
my reman 4 bbl qjet carb is not cutting it truck keeps flooding out i was thinking about an edelbrock somewhere around 500cfm its going on a 305
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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#2 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: what carb?
I'd have a tendency to look at the fuel pressure and the float adjustment before giving up. I'm confident you can make what you have work...my $.02.
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#3 | |
Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: what carb?
Quote:
![]() lower the float level. It may just be some trash under the needle valve.
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#4 |
Senior Member
![]() Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,234
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Re: what carb?
how do i do that? carb is new fuel is clean going though filter
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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#5 |
Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: what carb?
in a nut shell...
Take the top off of the carb, hold gently on the needle, and GENTLY press down on the float. There is a lot more to it then that...but the learning curve is steep. Do it once, and it'll be easy as pie after that. Study the info in these links: http://www.florida4x4.com/tech/quadr...d.com/Quad.htm http://www.florida4x4.com/tech/quadrajet/qjtshoot.pdf http://www.florida4x4.com/tech/quadrajet/qtune.pdf
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Bill BEATERS ARE NEATER |
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#6 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,217
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Re: what carb?
I agree.That carb should work & is the best carb. for that engine. Try this trick. If a piece of dirt got into the needle & seat this will clear it out.
Clamp a vice grip on the rubber fuel line to block the flow of gas. Start the engine & run it till it dies or almost dies. Remove the pliers & restart the engine. If it doesn't work the first time try it again. If it still doesn't work you will have to go into it like the guys said. |
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#7 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: what carb?
Talked a bit with him last night in chat - my recommendation was to get an overhaul kit and have a local shop replace the needle/seat and adjust the float.
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#8 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,217
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Re: what carb?
Good advise Bill. He should try my tech tip first. I,ve saved many a carb doing that. Sometimes changing the filter will let a small particle get in the needle & seat. Sometimes these paper filters can give off a little fibre when new.
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#9 |
Senior Member
![]() Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,234
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Re: what carb?
advance is exchanging the carb for my it was 2 months out of warranty but they doing ti anyway
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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#10 |
10/30/19
Join Date: Aug 2004
Location: ottawa kansas
Posts: 5,215
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Re: what carb?
Hey Dave,I've heard it that the reman carbs sit on the self awhile and the seals,gaskets dry out and it takes a couple of tries to get a fairly newer rebuilt carb.
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#11 |
Senior Member
![]() Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,234
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Re: what carb?
yeah i had the carb a year before i installed it it might have got roughed around once to yeah
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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#12 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,217
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Re: what carb?
About half the rebuilt carbs you get from the part stores aren't any good.
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#13 |
Senior Member
![]() Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,234
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Re: what carb?
well the guy that tuned the the truck said when he adjusted the left screw it made a differenace and the right one did not mak nay differences
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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