Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor

Rebuilt 7041204 issues

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ernie3:
It looks to be a quality repair with black Marine-Tex. If there is a leak it doesn't appear that it would be significant.

Any thoughts on the jetting? Does the .047 MAB's with the 71/42B set up raise a flag?

Any other issues that can cause it to be flooded after WOT?

Thanks for the feedback.

Ernie

429bbf:
ernie have you looked in carb after you shut it off to see if its overfilling the carb? needle and seat not seating good.do you know what kind of pressure you have on the fuel inlet . just a couple of things to look at.

Ethan1:
 A few more things to check. Are the fuel transfer holes in the air horn plugged? This would also cause a off idle hesitation. Are you getting that at all? Also, a locked up accelerator pump check ball could cause the hard start. Of course, this would also cause an off idle hesitation.

 How freely is your accelerator pump moving in its bore? Is the cup still in good shape after todays ethanol fuel? What kit did you use? Cliff's? Over-the-counter?

 Ethan

Hillbillyenginering:
I guess two things come to mind.
Since it was commercially rebuilt. Are you certain that all three sections are correct for each other?
I'm wondering if the float is sticking on the housing after wot?the float will drop down farther. Maybe stick or fuel coming in and holding it down.
Does it run good enough to jump out and look down the carb.
See if your secondary air flap is binding. I also found my secondary vacuum pot didn't let off fast enough. It was for a smaller engine with. Had to drill it out to release quicker

ernie3:
The replies are appreciated, I should have time this week to get back on it and provide some feedback on the suggestions.

I'm not sure about the kit, it was rebuilt by someone who for whatever reason stopped providing support before I was able to get it dialed in. It was already sent back once. I'm not throwing them under the bus, I don't know their situation, they've bent over backwards prior to now.

Which is why Hillbilly's post is concerning, not sure I would know how to identify mismatched sections - and maybe they are, which is why I'm no longer getting support.

Thanks guys,
Ernie

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