For the past 4 months my car has had non stop problems. The lastest is, my car will start miss firiing and get worse and worse. Then i change the plugs and its fine for awhile. But another 2-3 weeks i need new plugs. The old ones have alot of carbon deposits on them and I dont know what to do. Plz Help!!!!!

 

Did you tune that VAFC yet? You are probably just running rich as hell and fouling your plugs.

 

some carbon deposit is normal...

 

Misfiring isn't and he shouldn't be cashing plugs twice a month.

 

Sounds like you're runnin rich and fouling....

 

Sounds like something within the components of your ignition system are fairly, causing an incomplete burn, thus fouling your plugs.

 

my suggestion: buy some stock in NGK.