MOST COMMON Misadjusted Holley Carburetor Setting (2 second Fix)

I see this way too many times . . . don't be a chump
Facebook GROUP: Thunderhead289 Carb & Engine: Tech/Tune Forum

[ThunderHead]

i'm going back oldschool th289 - blending in a lot of tech videos. hope ya'll enjoy.
this is a channel for teaching and sharing knowledge - I miss doing stuff like this for you guys.

[somethingtrulyhorrifying]

I've been a chump these past couple months trying to figure out this off idle stumble, but after watching this video I went out and checked the lever and it had so much play you could almost put a pencil in it. Immediately closed the hood and took a walk to ponder my existence. When I finally came back, I adjusted the lever and the ole 460 runs like a champ now. Thanks Luke.

[BanditRider]

Thank you for this my dad passed away and I'm trying my best to get his car running

[FordFanatic]

I learned a lot of this stuff from my dad a long time ago, and forgot most of it. He is gone now, and I have a carb engine to work on, so it is great having your channel to relearn from. It is great to know that old school mechanics all seem to have had the same real world applications! Thanks, and keep it up.!

[grngs]

Your video was MUCH better than any Holley tech vids explaining how the pump is supposed to work, I “all of a sudden “ have a hesitation when I stab the throttle, even on the highway, if I backed off the throttle then back onto it, a split second hesitation, NEVER would I have considered the fact I lowered my idle and that directly affects the pump operation. THANK YOU👍

[applefordguy]

I just bought a 77 F150 with a 351M... Ran like crap. After viewing numerous vids, I have it dialed in perfectly. Thanks Luke!

[eobwqdn]

Great video! the only way people will stop being afraid of carburetors is by learning about them. Can’t wait for the edelbrock video!

[WesternReloader]

Great video Luke as always. It’s funny how the way different people absorb and interpret information, well differently, and I think that’s one reason I gravitated towards your vids, in that you generally deliver what I consider to be vital with instruction videos, and that is concept. The concept here is the dynamic relationship between off idle adjustment and the accelerator pump are joined at the hip with seemingly everything like AFR, initial mechanical advance, jet sizes, the throttle linkage, etc. it’s quite a bit but slowly I’m beginning to understand how necessary it is to comprehend the myriad of relationships between components, their adjustments, and not a single complements adjustment can stand alone. That would make one hell of a video, a video that explains the woven interconnected dynamic mess of displacement, bore, stroke, fuel delivery, variables in fuel delivery, eliminating variables in fuel delivery, timing, compression, valve events, engine under load, low load, heavy load, elevation, temperature, gearing, vehicle use, and the endless compromises one must understand in order to tune all of it to meet a very specific goal, which for everyone is different. Oh boy, there’s no end to the learning. Thanks for your sharing

[JoshGt]

I have been chasing a stumble for about 2 weeks on this truck I put together. I have messed with the accelerator pump adjustment until I went insane, replaced the pump discharge nozzle to a larger size, timing, on and on and on. This was the fix. Thank you so much!!!

[perotekku]

Great as always Luke, best part? The mic level is perfect volume and clear, love it! Don't want to miss a word of this gold!

[therealhammer]

I really enjoy your videos. Catching up as I put the finishing touches on my 63 Merc Comet S-22 engine bay. Your carb and engine/distributor videos have been very helpful.

[squidtender]

Man, I got behind in your videos, so I've got 6 more to watch. Which means I get to binge! Anyway, thanks, Luke, for the great tutorials. You're my favorite teacher by far.

[daniellachance]

Always look forward to your tech videos. Thanks for great information. You have really helped me out. Not afraid to tackle my carb now.

[jordanpeele]

Thanks just fixed my holly on a 67 mustang. Was stumbling off idle after vacuum tune. Didnt realize I needed to readjust the accel pump! Solid gold my man!

[olliehopnoodle]

This video explains why having the pump misadjusted causes problems in both cases of it being too much or too little. Excellent info if you want to understand 'why' the adjustment is important.

[jimmullis]

Thanks, Luke.
Good, precise information explained so that even I "a self-proclaimed non carb guy" can understand.
Good stuff !!

[jimh]

Good stuff! I'm getting ready to deal with a marine carburetor and appreciate the lessons!

[jello]

Good explanation. My Holley book for a street dominator I had years ago said I should have a little gap (I think .015") between the accelerator pump arm and the throttle linkage. From what I've read, you may want a split second of air before spraying fuel into the boosters. I feel like this will vary between engine combo's so maybe no gap or maybe a little gap.

[loicconte]

Always love to learn from a guy with a bottle opener ring :) Great video

[robertdowney]

Not just Holley, Edlebrock too... Hey man thank you for pointing out the obvious, because t was not registering. I just finished a nightmare build that went from a Ford 400 to a 351M to an actual 302HO crank in a 351M block, by the casting codes, with 400 heads. Don't ask it's a long story. and on top of that, new cam, intake, card, valve springs, lifters, etc.and with all the changes getting the timing right was a battle and so I was thinking timing and hadn't even checked closely the accelerator pump. Sure enough it was loose as hell. tightened it up and what a difference... Thank you!