Hey, everybody. I have an 84 CJ7 with a rebuilt 258. The previous owner put in the MC2100 and it never ran well below the 1000rpm range. I took out the carby to clean and inspect it. It has now been rebuilt/cleaned at least 3 times and it'll still lope below the 1200 rpm range! And also, after it hits the 1200 rpm range or so, it runs perfectly. I hooked up a vacuum gage and it's very steady at 3 in... running! I know it's not the vacuum hose. So, could it be timed wrong, or could the ignition system be too weak or...
I'm pretty sure it's not the now spotless carby, because it is the 1.08 with 47 jets with all new gaskets and valves. I already posted this, but I'm new to Jeepz and put it in the new member forum by accident.
Any advise will be much appreciated. Sorry, kinda long.