So recently bought a 2003 g35 an love it. But pisfire code was popping up. I started with the easy spark plug check and changed all of them. Now my car is shaking like crazy has no power and engine light is flashing! What did i do wrong!!!! Everything was pugged in the way it was. Before i did the plugs everything was fine too no shaking no los of power but now i messed it all up. How do i fix this?

 

Sounds like you crossed the wires for the cylinders when you were plugging everything back in. Check each coil pack and make sure the right wire is attached to the correct cylinder. Your firing order might be out of order. Make sure you don't have any vacuum leaks also if you touched any of the vac lines. You could have crossed cylinder #4 and #6. Also did you touch the throttle body or mess around with it during the install.



https://g35driver.com/forums/engine-...ug-change.html

https://g35driver.com/forums/engine-...-run-help.html

http://my350z.com/forum/engine-and-d...parkplugs.html

 

I am pretty sure everything was put back together perfect. i did one plug at a time. i did however remove two hoses to get to the plugs. also it sounds like i have a clogged cat now. and i noticed last night it was RED hot. could anything u mentioned caused this to happen? i am panicked at this point not having the money to keep throwing parts

 

Take it apart and put it Back together according to G35 Mass' DIY thread for spar plug changes. Something changed...!

 

thats what im gonna do today. im just scared now of messing it up more to the point of no repair.

 

Take it to a technician who knows what they're doing for god sakes

 

He can't drive it !

 

Tow truck