ok now is back fires when i try to start the car warm start but shot down and when i try again just start but the rpm stay low and back fires like under the car start are low but when i start driven the back fires gone

Your post isn't very clear. Not having a go at you but some full stops or commas could help.



It could be leaky injectors. I know mine backfires sometimes either on warm or cold start. I'm sure that's my reason for backfiring, just clearing out the extra fuel. It only happens when I start the car, while driving it's fine. Getting them cleaned properly soon.

ok when the car is cold and I start the car the idle stay between 500 to 800 sound like the exhoust is block or something like that is when start the back fires,is smell a little bit fuel and then pass like minute or 2 and the idle go normal but then start up and down between 2000rpm and 1000rpm.I start to get mad but i love the car and I want to make work.