LeonV

Hi guys, I'm back with another problem. This is regarding a 1983 5.0, so it's carburated. The rpms jump from high to low at idle, especially on a cold start, but it's still noticeable when the car is warm. When I'm driving and trying to keep the car at a steady speed I can feel the car slightly lurching, meaning it's surging at all speeds. I'm thinking it's a fuel problem, but the Chilton's manual is a piece of garbage and doesn't offer troubleshooting for the carb, unless I'm a blind idiot. Also the car takes 5-6 starts to hold its idle when cold. Any advice is appreciated!

Thanks,

Leon

mjr46

you most likely have a lean condition and on a car that old I'd look for vaccum leaks and or an issue with the egr valve if all the emissions are still there

LeonV

Yeah, i was also thinking lean and the vacuum check will be tomorrow. I guess I'll try to adjust the floats on that old Holley. The emissions stuff is there so I'll check that. i was also thinking that I should replace the fuel filter as it's probably gunked up. Thanks for the reply!

mjr46

all are good things to check , good luck

mstngsule68

just check for vac. leaks and then check the carb. make sure its putting fuel in when ya hit the gas. or if its org. maybe it just needs a rebuild.