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Old 07-20-2003, 08:39 PM   #1
brad20653
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fuel line help quick plz

what size should the hose be to a eldebrock 1406 i used 5/16 was 3/8 now black smoke bad
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Old 07-20-2003, 08:44 PM   #2
Lumpy
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I use 3/8" line on mine. Lumpy
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Old 07-20-2003, 09:37 PM   #3
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Should have a 3/8 line, but it sounds to me like your carb needs adjusted. Start with adjusting the 2 screws in all te way and backed out by 1/4 turn.
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Old 07-20-2003, 09:39 PM   #4
Tx Firefighter
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fuel line size won't cause it to black smoke. You have carb problems.

Too small of a fuel line will hurt power at WOT
Too large of a fuel ine won't hurt anything.
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Old 07-20-2003, 09:48 PM   #5
SEVEND2
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just an fyi I use 3/8 line too. sounds like carb needs adj.
does it back fire ot sputter at any time or act sluggish?
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Old 07-20-2003, 09:54 PM   #6
brad20653
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yes
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Old 07-20-2003, 10:13 PM   #7
ddsmith
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What fuel pressure is the supply to the carb at? These edelbrocks are picky about to hi a supply pressure. It will run rich all day long if supply pressure is to hi.
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Old 07-20-2003, 10:42 PM   #8
brad20653
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i really dont know just a stock fuel pump
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Old 07-20-2003, 11:35 PM   #9
SEVEND2
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stock pump should be fine , i am running same carb and stock pump., Check your timing and points, adj carb settings
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With a 1972 Chevy Custom-10 Long bed w/350cid th350, (under-construction).

Progress on truck so far (follow link):
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and stage 2

http://67-72chevytrucks.com/vboard/s...ad.php?t=58132


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Old 07-22-2003, 02:50 AM   #10
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Sure you didn't get a little speck of something under the float valve?
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