exhaust misfire when idling..

[zero2hundred]

Need advise, when my car is idling....the exhaust is sometimes misfire, it sounds like "prop prop" the flowing is not smooth when the gases released and timing was all ok, it only happen when idle...it runs fine when i boost or drive...!!

 

[SkYwAlKeR]

running rich??..

 

[zero2hundred]

im nt too sure, currently using evo fuelpump....but so far no problem...it happen recently only...running rich im not worry...scare its lean..

 

[SYeNi69]

that happened to me when i had a faulty fuel pump ... try checking it ...

 

[zero2hundred]

hmm, i got the same sense also...maybe i shud get it a try....thx

 

[civic 0.5 BAR]

grand valve...happen my friend vr4