Along with a host of other issues my blazer is now misfiring, and it seems to be only at idle. When I'm driving it doesn't feel 100% but not that bad. I'm thinking maybe spark plugs? Can any one help I need to fix this thing asap. Thanks.

 

Is the 'check engine' light on? Have you had the DTC's read?

 

The SES light is on all the time and blinks only at idle. The idle is also really rough. I read the codes with a scanner and it said cylinder 4 misfire, I dont remember the code number.

 

Sorry, but there isn't much we can do without those code numbers.

 

had the same thing in my 96 blazer. i put in a bottle of lucus fuel injecter cleaner that i got at advance auto parts. porblem fixed after about 50 miles. remember to clear codes.