Carb issue

[nathans76]

My 76 124 was running good...note, was. I had it parked for a few days and went to take it out for a spin. It started right up was driving around a few when I stopped for a light. I went to take off and as soon as the engine came under load starting coughing, spitting, had to floor it just to get across the street. Brought to the curb and it idled smooth. Started off again and same thing. Acted like starved for gas but tank was at half. I limped it home and cannot figure what happened. Changed the fuel filter, checked the pump and put in fresh gas. Starts right up, idles good but as soon as gas fed coughs and stalls out. Will start right up again. Suggestions ? Thx

Nate

Nathans76
76 That 124
15 Subaru Outback
11 VW CC
93 F150

[azruss]

sounds like a failing fuel pump. Did you check the screen in the carb. May want to look at vaccuum advance hoses and dizzy timing.

[bradartigue]

Ditto on the pump - if the filter is clear it isn't giving the carb enough gas to keep going. Could also be rust in the float bowl, has the same symptom.

[So Cal Mark]

there should be enough fuel in the float bowl to get across an intersection. You might have a jet in the carb that is clogged. Since it's a 76, have you checked the points gap?

[nathans76]

Thanks all. I'll check the pump again and the carb jets. Didn't think about the timing. Hope to work on it this weekend.

Nate

[majicwrench]

If you floored it enough to get it across an intersection, then it idled fine on other side, I would say it has plenty of fuel in float bowl, thus fuel pump fine.
And sure, check the timing, but really, did you timing change just sitting there?? If it idles fine, like it always has, the timing didn't change.
Those carbs often plug up various parts. I would put on a pair of safety glasses and peek down inside carb while opening throtte. You should see fuel spraying from accel pump discharge, and then see fuel coming from venturi.

The single most common thing to plug is the idle/low speed jet, makes accel awfull, hesitates terrible. But when idle/low speed jet plugs, idle goes to heck as well. You say the idle is OK?? What rpm is idle??

Did it run OK floored??

[toplessexpat]

Also check good power to the pump - if there's a dodgy connection, you'd get intermittent fuel starvation.

[johndemar]

While I'll defer to those on this site with a whole lot more car smarts than me, may sure you check the condition of all the vacuum hoses. If you still have the 32ADFA on it, there are a number of hoses that if leaking would cause the car to stumble.