Maxima'91 SE

Recently I find the sound of Muffler is not uniform. Seems like "Pong Pong Pong...Pong". when I start my car or stop before traffic light, I can feel a little vibration. Muffler also vibrates.

Does anybody know what is wrong with my car?

Thanks in advance for your help.

Have a good weekend!

 

Is it missing/misfiring? Hows the rpm's look at idle. If it's jumpy then it is missing. Could be a few things

 

The idle is ok. 720-770.

Could you give me some details? Thanks

 

i have this problem also, but my idle isnt very erratic...i posted my trouble in another thread, but i'm not too concerned about the sound of the exhaust.