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#1
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Holley 4346 question
Hey guys, I’m battling an issue on my yenko. It has a really bad dead spot when lightly on the throttle. And if I step on it hard it will hesitate for a second then take off. I’ve adjusted and replaced accel pump with no change.
Does anyone know what number squirted should be on the 4346 Holley? Or have any suggestions ? Thanks!
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1967 Z28 survivor Black original drivetrain 1968 Z28 survivor white 40k miles 1969 Z28 survivor Rally Green 60k miles 1969 Z28 survivor Rally Green 20k miles 1969 Yenko Camaro Lemans Blue -muscatell sold new, second to last yenko made 1969 Berger copo original paint 240 miles Lots of 67-72 Chevrolet trucks |
#2
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With the car not running and looking down the carb when you give it gas does the accelerator pump squirt right away, or is there a slight pause?
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am |
#3
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Have you checked the ignition timing? Retarded timing will cause a hesitation.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed |
#4
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Check timing and rev it up with the vacuum advance hooked up to make sure it is working.
Make sure no vacuum leaks. Clean the idle and main air bleeds with some carb cleaner, especially if it has been sitting. I use a 31 squirter in my small block mild cam with headers Corvette. |
#5
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Another possibility is your primary power valve may be opening too soon causing the hesitation. When did this start happening? You may need to go down a # or two. It could be what other suggest. Goodluck......
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Steve Shauger The Supercar Registry www.yenko.net Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website: www.vintagecertification.com Last edited by Steve Shauger; 06-09-2020 at 01:45 PM. |
#6
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To answer your initial question, the original squirter was .025.
You can go here, then save it as a pdf and keep it on your computer for quick reference. https://documents.holley.com/techlib...al_listing.pdf
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Don't believe everything you read on the internet ... Ben Franklin |
#7
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Maybe the squirter size
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#8
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4346 issue...
Call Eric Jackson...
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
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