This Holley is going to be the death of me. Or at least my engine

C

clutchdust

Millionaire Playboy
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I've been working on getting this stinking 750vs Holley sorted out for several months now. I finally got it pretty well dialed in, or so I thought. I still have (had) a very slight flat spot on light throttle tip in but it was something I could deal with for the time being. So overall, I was fairly happy with this boat anchor.
Flash forward to yesterday, I had to go to my chemotherapy appointment so I hop in the car and off I go. Now the car has almost no acceleration on tip in. In fact, it sounds distinctly like a "Jake Brake". I still have the original narrow band O2 sensor hooked up to an LED A/F gauge. This thing is showing super lean all of a sudden, as in not even lighting up the lean LEDs. I can't remember exactly but I think the range is something like 10:1 on the rich side down to 14.5:1 on the lean. Something like that. So now I have to yank this goddamned thing off again and find out why I have no fuel on the primary side.
The silver lining is I know my secondary side is working just fine because I can see on the gauge when the secondaries open as the A/F reading instantly goes a little fat and the car runs great for the few seconds I'm into them.
40 miles round trip. Hope I didn't bang any pistons.
 
Fair sails and following seas to you man....:gurney:

HOLLEY, man, I had to edit my post....I obviously didn't read your post close enough....sorry...

Take care man....

:drink::drink:
 
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Well, the good news is it was a very simple problem. I just hope I didn't do any damage driving it. Turns out that months ago when I changed the float level and ended up changing out the needle and seat, well long story. In the end I cut the old o-ring (since in the 50+ years Holley's been making these things they've never found time to put a small chamfer in that seat) and a piece of that has been floating around for who knows how long. I had the bowl off and thought I douched it pretty well with carb cleaner but that little bastard bit of o-ring must have been hiding up behind the needle and seat. I pulled the bowl off and there in all its glory was this small piece of o-ring blocking the left side primary jet. No wonder it felt like it was Jake Braking. Took it out, douched everything down again with carb cleaner and took it for a spin. Amazing how much better the car runs when it gets gas!
 
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