p1300 code

well im new here and i need your help....i know you've heard that before...well i just bought a 95 blazer lt with the 4.3 engine code w. my problem is it runs rough raw fuel smell out of the exhaust, poor gas milage (200 miles to a full tank of gas) and it seems to have a miss.. the computer was scaned and got multiple misfire, running rich those 2 codes i dont remember and the p1300 code for ignitor circuit. checked and cleaned egr,tuning valve, tps, map. checked wiresand cap and rotor.. i dont know much about the hvs system....any help would be great...

There is no P1300 code for a chev.

You sure you got the right code.