Well, here we go with another b210 iddle problem on my 78. My problem seems to be reletivly close to all the others on this sight.bare with me im not the best at this stuff I have read and read and read and I am sill lost. this is my first time trying to figure out a carborator and im trying to learn also sorry if some of this is repetetive to any of the other forms on here im doing my best :)My car back fires and seems to come out the exaust not the intake but i could be wrong. When I bought the car it ran just fine all the way from Provo to Layton (50 miles); Not one problem until i got home and tried to take the car out the next day . The guy I bought it from said he rebuilt the carborator and did new lifters due to a bent one who knows if he did them all and if he evn did it right in the first place. The difference from all the forms I have read is it does idle rough. But it is when you push on the gas peddle it tries to shut down unless its all the way down to the floor. Then it will idle hard and backfire.theres kind of a glitchy spot in the throtle. The backfiring seemed to start once i got a new bearing for the smog pully and replaced the belt. (The previeous one snaped at one point becuse of the bearing) but i know the smog pump was not coneccted when it ran good in the first place
Things i have tested:
compretion125 120 119 120
witch seams terribly low? compaired to the form i read on here
the float level was on the dot
the fuel jet line down in the carb sprays a sold line when pulling the throttle
the idle silenoid has twelve volts. not sure how to test the silenoid tho?
cap and rotor look brand new
all spark plug gap are at .042 but seem alittle black
replaces mostaly all the vacume lines any of the ones that looked even remotly loose
any suggestions on what to check next? do you guys think its needs a vaulve adjustment maby even an overhaul or rebuild ?like i said im just barely diveing into the hole cars thing im not the best at this so anything helps even if its pointing me to another form on here.