Misfiring on cylinder 4 on a 2000 mercury grand marquis code po304
JA: Have you seen the misfire code before? Has the car been stalling?
Customer: No I haven't. It hasn't stalled but keeps chugging it seems like it may stall but hasn't. Check engine
light is on and sometimes beeps and blinks while driving
JA: What is the model of your '00 Ford?
Customer: Grand marquis LS
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes I've replaced all plugs and checked resistance on coils and injectors all seem fine
JA: Anything else you think the mechanic should know?
Customer: Took number 4 injector out and cleaned it but no change still missing
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and then connect you two.