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#1
09-12-2017, 03:54 PM
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Holley 4555 Secondaries
I fired up my Yenko this past weekend, but fuel is literally pouring into the secondaries, it will barely stay running. I pulled the carb, removed the fuel bowl and looks the matter!! Any insights as to what would cause such a fuel dump?!
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride) 
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#2
09-12-2017, 04:05 PM
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Too much fuel pressure, crap in the needle/seat, float (if plastic) too heavy (absorded fuel). Just a few things to check ... Craig
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know!
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#3
09-12-2017, 04:26 PM
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As earntaz said, needle/seat or float issue most likely. Also make sure the secondary air bleeds are clean, modern gas gets gummy fast on cars that don't get driven frequently.
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#4
09-12-2017, 04:32 PM
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Quote:
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"Knowledge is good" Emil Fabor 67 L/78 Camaro SS/RS H-H,1W,2LGSR,3SL,4K,5BY. (Sold) 70 L/78 Nova M-21,Black Cherry,Sandalwood Int. 09 Pontiac G8 GT Premium,Sport,Roof. Liquid Red.
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#5
09-12-2017, 05:52 PM
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Ok, I'll just replace everything, I don't wanna mess around - plus it's a good tutorial for Benjamin to see how a Holley comes apart, and hopefully goes back together!
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride)
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#6
09-12-2017, 07:13 PM
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Has it been a while since it has been run? Sounds like stuck float to me. I've had this happen a couple of times. Fix might be as simple as opening float sight plug, and moving float up and down with a screw driver to free it up.
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#7
09-12-2017, 09:14 PM
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Marlin -- let us know what you find ... Craig
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know!
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#8
09-13-2017, 09:49 PM
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| The Following User Says Thank You to VintageMusclecar For This Useful Post: | ||
John Brown (09-14-2017) | ||
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#9
09-14-2017, 12:36 PM
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^^^^
Should be required reading for anyone that has a Holley carburetor. 
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...................... John Brown This isn't rocket surgery.....
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