Alright guys so I just installed my spark plugs today and now my engine idles really rough. The car literally shakes. I torque the plugs to spec and also reset the ECU and the Throttle body. I tried it several times and still nothing. I also check all of the wiring and cleaned the MAF. I even put the OLD spark plugs back to see if it stilll happens but it still gets a rough idle.


Now the car is smoking like crazy. PLEASE HELP. I tried searching and tried everything that was stated. I also check for leaks and found nothing. PLEASE HELP.



EDIT: I forgot to mention that the check engine light is on and used a I OBD II and stated a P0300 which is a misfire.

 

P0300 is random/multiple misfires. Maybe you messed up the order when reattaching the sensors to the coils. Did you remove any other sensors? Make sure everything is in the correct order, and also make sure the bolt that attaches each coil is torqued down enough and is making contact with the plug (just make sure it's snug and pushed in all the way).

Since you have no other code, I'm inclined to think that might be your issue.

 

^ thanks for th input man so I ended up testing each one by unplugging each one and found the one that was misfiring. It ended up misfiring because one of the connectors for the plugs were bent when pluged in. I bent it back to place and bam worked like a charm.

 

Nice nice