fergusontom45
+1y
been a while since i've been on here, but i gotta new problem.....blowing black crap out the exhaust...i think i'm running rich, but not completely sure, could just be some build up in the exhuast system... it started when we got our first freezing temps at night a couple weeks ago...it's an 87 b2000 with original carb and intake, with all the emissions bs...sprayed some carb cleaner and hoping that fixes it.... at least temporarily...at first startup in the morning it takes about 10-20 min to warm up, but as it's warming up it feels and sounds like it's getting bogged down.... then when it starts to actually get warm it starts to rev itself to what seems like a high rpm... if i start going anywhere before its warm it will start to misfire and that feels like it's causing the rear tires to jerk causing the whole truck to shake violently.... after a couple minutes of that, if i pull it outta gear it will then rev itself up high again.... if i don't go anywhere until it's completely warmed up everything is kosher, but this thing is my only mode of transportation at the moment and its kinda freakin me out.... so am i running rich, is my carb on its last leg, or do i just need to be patient and let it warm up comletely.... cause it seems like it's using a lot of gas just to warm it up....lol..... i'm hoping for a positive answere before i start tearing into it... thanks guys