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New carb. leaking fuel

70 StangMan

70 StangMan

Well-Known Member
Donator
I need some advise. I put on the new carb. today with a new set of Felpro gaskets. one on the intake and one on top of the spacer. Bolted down and hooked everything up and she fired right up as soon as the fuel hit. Watched for leaks as the choke opened up and saw none. Let it idle for about 10 min. and took a quick ride around the neighborhood. Ran great !! then pulled into the drive and sputtered out and died. Would not start back up. I got out and checked and gas was pouring out around all sides of the carb and spacer gaskets like a whore. Checked the nuts and was able to get a 1/8th or so turn on them. Let everything dry out, re tightened the nuts and try to fire up and once again fuel was pouring out around the gaskets. :wtf
 
"Mach1Rider" said:
Float levels too high or stuck needles.
Some info on the type of carb would be helpful. :roll
Click to expand...
Autolite 2100...I'm thinking the needle and seat are stuck open. Tapped on the side with a hammer thinking it might "unstick it" but no change. Looking down from the top fuel is POURING into the carb.
 
"70 StangMan" said:
Autolite 2100...I'm thinking the needle and seat are stuck open.
Click to expand...

That would be my first thought....but I have no experience troubleshooting carbs, just rebuilding.
 
Fuel level too high, Check the float and needle/seat.
When reinstalling make sure the floats mounting bar is centered, they sometime slip and cause float to stick.
 
As others have already stated, either the floats are set way too high or the needle is stuck open. Been there, fixed it.
 
Just popped off the top..the float seems to be moving freely. fuel is appr. 3/4 the way up the bowl and when pushed from over the needle the float will rise appr. a 1/16 th of a inch andd will drop below the fuel level if pushed. Doesn't appear stuck ??
 
lrg_Root_Beer_Float.png



:sm_NTA
 
It could have trash in there and it's not letting it seat completely.
 
"silverblueBP" said:
It could have trash in there and it's not letting it seat completely.
Click to expand...
Well what ever it is, it's really chapping my Ass.... Thank's for the input J. :beer
 
"70 StangMan" said:
Just popped off the top..the float seems to be moving freely. fuel is appr. 3/4 the way up the bowl and when pushed from over the needle the float will rise appr. a 1/16 th of a inch andd will drop below the fuel level if pushed. Doesn't appear stuck ??
Click to expand...

With the top off , remove the float and needle.
Crank the eng over to have the pump push fuel thru the seat flushing it out.
Check needles point and seat for burrs.
Re adjust float level so fuel is approx 1in down from top and float closes off flow.
 
Assuming float adjustment doesn't fix it, what kind of fuel pump are you running? Too much fuel pressure will cause the same problems.
 
"Mach1Rider" said:
With the top off , remove the float and needle.
Crank the eng over to have the pump push fuel thru the seat flushing it out.
Check needles point and seat for burrs.
Re adjust float level so fuel is approx 1in down from top and float closes off flow.
Click to expand...
What is the best way to remove it without screwing something up ??
 
"Starfury" said:
Assuming float adjustment doesn't fix it, what kind of fuel pump are you running? Too much fuel pressure will cause the same problems.
Click to expand...
Just a std. ford manual fuel pump.
 
:confu... Its been a while for 2V carb but, the float and needle should just lift out.
The seat is screwed into the base, it takes a wide flat tip screwdriver to remove.
 
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