I NEED HELP ! weak engine start up ????

[Hookm36]

OK, so I have a 2004 G35 auto, has 50K miles, over the past 3 weeks, I have noticed that when I start up the car (doesnt matter what time of day) that it kind of hesitates to start, the starting sound is weak, not as bold as it was before.............NOW, a buddy of mine has the exact same car, an 04 w/ about same mileage ect......he is experiencing the SAME EXACT problem........I dont know what it is?

we both installed a JWT pop charger and z tube at the same time, but it was back in like September i think......we have not re-oiled the filter, could this have anything to do with it ?

Thank you for your help!

[tollboothwilley]

shouldn't be anything to do with the intake you put on

My guess is that your spark plugs are getting off and its time to replace them. Most people here will tell you to replace every 50K even though the manual may say you can go longer. People have found their plug gaps to be very different even at 50K miles.

[C-Kwik]

Locking this thread as you alredy posted a thread here:

http://forums.g35club.org/zerothread/349094