Hi all. I hope you all can offer some advice on this...
My 1980 Bronco, 351M, C6, with a Holley 600 and manual choke is flooding, I
think, something fierce. Here's the deal, and I hope someone can help!
I'm driving it home today and it's running like a dream - like it always
does. I just start to go down a steep hill and it suddenly just dies.
Sputters and dies.
It won't start. But is cranking like mad. So I hold the gas to the floor and
hold the key on. After a few seconds it starts something rough, black smoke
billowing from the exhaust and the smell of gas. I take my foot off the gas,
it idles good for two seconds then the idle drops down (as it should) and it
sputters and dies quickly. It always seems to start with the gas pedal on
the floor, but dies as soon as you take your foot off and the revs go down.
Also, the battery gauge has moved from dead centre towards the "C", about
half way. Keeping the revs up makes it come back to the centre a bit. The
battery is new and the connections tight. And it turns the starter like
Also, I noticed it was running a little hot today as the weather warmed up
today and I had the grill bra on, but it was open, and the needle was still
in the "normal" zone.
The truck has about 250K (150 miles) on it and I am the second owner. It has
been exceptionally well taken care of, but I'm not sure how old the carb or
ignition and fuel systems are, as it's always ran great and I never screwed
with any of it.
I'm not sure what to do here. As long as you floor it to start it, it will
start (with a lot of black smoke and a strong gas smell), but take your foot
off the gas to put it in drive and it sputters and dies. Some gas comes
sputtering out the top of the carb when it dies and then it smokes from the
butterfly. (Setting the high idle with the manual choke does not help, nor
did turning the idle screw to increase the idle.)
Well guys, until I can get some assistance in this group, I'm hoofing it.
Please help if you can...