i got flooding

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clairday modtop

clairday modtop

there's no car like mopar
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well i drove about 1 1/2 miles down the road and all was good. i turn around to come home and i get back fireing and poor runing. i finaly get home and it kills and cost into the drive way. i pop the hood and take off the brether, i see gas pooring out the lil pump on top and side of the qt 4 bbl. i know i need new plug wires but that wouldnt make it flood out? geting to much gas? manule fuel pump and a filter in the car. 400 motor. any ideas
 
What carb you got ?????? had this trouble with an eddy 600 was metal particals stuck in the rubber cones of the needle valves it was not shutting off fuel so put some new ones in and OK now
 
its a GM QJ-carb. i know i know lol it was on the van i got the motor out of. someone must of thought it would b funny. if i have to take it apart, is there a diagram to show how to put it back togethere lol
 
You more than likely have bad floats,especially if they are the original phenolic plastic style. Go get a rebuild kit and some brass floats. The rebuild kit should have a diagram and some nice expanded close up drawings.
 
what fuel pump is it? should be 5-6 I think six is good.. I had flooding as well and mine was at 10psi so I got a regulator
 
well i started it up again and drove it to see if it would do the same. well no gas leaking but from the backfiring from the carb and the ex. i bearly made it home and it was just geting warm. bearly a mile round trip. i think i got Gremlins lol.
 
i had the same issue with both my eddy 600 and holley 650 pulled them apart and cleaned out the needle and seats and they work fine now.... is your floats ok???
 
I just fixed this problem lastnite on out 72 F-100 390 with carter 650 carb. The passenger side float was full of gas, I swapped it out and it runs great! Those GM floats had to be the dumbest idea anyone ever thought of!
 
Where you "flooring" it, I used to get flooding all the time.The float would stick and when I let off of it the carb would flood.Put new floats in it and it still had frequent problems tried another one same thing, ended up putting a Holley on it and never looked back.
 
it floods both ways of driveing. when it starts the backfiring thats it. i can bearly get it to 5 mph and it runs like hammered **** lol.
 
If I were you I'd get an old ThermoQuad, rebuild that, then swap it with your QJ.
 
Y'all do know that a Q-Jet only has one float, needle/seat right? You probably have a bad float and if so, replace any plastic/nytrophyl float with a correct style brass float.

Check your choke pull-off and any vacuum lines or plugs on the vacuum fittings. Also make sure the 4 carb to intake bolts are tightened properly, David.
 
clairday modtop said:
dose it need a rebuild? or is it ready to bolt and pump.\?
Click to expand...

Even if it needs a rebuild and you can get it for a good price I would buy it and if it needs a rebuild they are the easiest carbs to rebuild, you don't have to be a carb man all you have to do is look a the picture that comes with the kit.
I stole one of Nikkis cookie sheets and I use that to lay out all the parts when I'm rebuilding carbs.

It would be 1000% better than that P.O.S. Quadrapuke you have on there now!
 
I just had this on my 360 all I would do is clean it up It worked very well on my 318 and so easy to tune
 
After dumping all of that gas you should change your oil before you start it up again. Your oil has probably been diluted by all of that extra gas. VERY IMPORTANT!!!!!!!!
 
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