backfire slk
 

the last couple of days my car starts to sputter and small back fire when I floor the gas pedle. I noticed a loss in power also. I changed the spark plugs around 7months ago. I just put fuel injector cleaner in today. any ideas on what it could be? thanks

Well first is there a ck engine light on? does the trans seem to shift funny? if so you might have a bad air mass meter, explain the loss of power

yes it does shift funny. and the chk engine light was on 4 days ago but went out. Can I try and clean this air mass

possible exhaust leak? Did you do any changes to the car recently? also try a different brand of gas. You are using premium gas right?

nope, no changes made. It could be some bad gas. maybe the fuel injector cleaner will help??

nned to scan for dodes, also look at air mass values w/scanner, Soulnds like a bad air mass. Cant clean an air mass and think it is gonna fix it.