HELP

Bullardbs

Bullardbs

Well-Known Member
Joined
May 7, 2007
Location
Thomasville, NC
I bought a new carb for my bronco and got it on and have drivin it about 100 miles. I got home last night and parked it and now when you try to start it it is dumping fuel as fast as it can get it out. THe pic shows were the fuel is comming from so any help would be nice thanks.
 

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any ideas need help trying to move my storage building with it today but cant get it to run with the fuel dumping like it is
 
I got it fixed I adjusted the fuel level in the secondary bowl and it is all good now
 
Now that I got the carb to quit dumping fuel it wont idle now you have to give it gas to get it to idle. I adjusted the idle up but it just seems to die off in a few seconds after letting off the gas.

Anyone have any ideas or if some one lives close and wants to take a look that would help. Trying to get it running to go to DPG this weekend.
 
fattypackard said:
were you having problems with it running before you bought the carb?
i am assuming so hence the reason for buying a new carb?
Click to expand...

No it ran fine it just was getting bad mpg so I was told that a 4bbl would work out better so I swaped it out with new intake and a rebuilt holley 600
 
ol'Jeeps said:
Float too low now?

Didi ya mess with the idle screws before while it was dumping fuel? They may need reset
Click to expand...


I did not mess with the idle screws but may need to check the float again. I only adjustedthe scondary float would that affect the idle?
 
yeah, messing with either of the float bowls will still affect the idle, get the floats set right, and then set the idle, try and pick up some clear bowl sights, usually around 5 bucks from a parts house......really helps out when setting the float height.........how many cfms is the carb and how big is engine......this happened on my nova when i switched carbs.....was trying out a carb that was too big and didnt get a good idle vacuum signal to the carb, tryed tuning the carb, nothing changed, switched from a 1250 back down to a 1050, and tuned it and ran/idled fine
 
Bullardbs said:
I did not mess with the idle screws but may need to check the float again. I only adjusted the secondary float would that affect the idle?
Click to expand...

If its a double pumper, yes. Other wise, no. Secondaries have no idle circuit.

I would recheck/set the floats...both ends. Back off the idle speed adjust screws (on the throttle linkage), set the idle mixture screw out, 1.5 turns each and start again from there. That eliminates those as being the culprit!

Off the shelf Hollies are notorious for being out of whack!
 
ol'Jeeps said:
If its a double pumper, yes. Other wise, no. Secondaries have no idle circuit.

I would recheck/set the floats...both ends. Back off the idle speed adjust screws (on the throttle linkage), set the idle mixture screw out, 1.5 turns each and start again from there. That eliminates those as being the culprit!

Off the shelf Hollies are notorious for being out of whack!
Click to expand...

It is not a double pumper

Thanks will start from there tomorrow and let you know how it go's Thanks for everyones help
 
Bullardbs said:
It is not a double pumper

Thanks will start from there tomorrow and let you know how it go's Thanks for everyones help
Click to expand...

One other thought. Is this an 1850 carb?

Do you have a "cam" in the engine? I had an experience once with one of these where the spring in the vac secondaries were wrong for the vacuum signal of a "cammed" engine.
 
I dont think the engine has a aftermarket cam but not sure\

I put new plugs in the bronco and set the screw to 1.5 and set the bowls and it ldles very smooth now so we will see how it gos at DPG tomorrow
 
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