hey ridenour i didnt wanna post to of the same thread i wanted to change the subject and add more things, my fault also i made a mistake in the type of plugs i bought there actually the NGK iridium IX's also i think the four rubber pieces one of the coils wasnt aligned properly do you think that could of been the cause for the putt putt and shake... im super pissed but glad at the same time i put the old plugs back in and the car works fine, but when i went to go and reinstall the new plugs again i took the cover off and put the 4 rubber pieces back and got the cover on and got the coils aligned and when i went to start my car it owuldnt start i did that twice then when i was finished puittin the old plugs back in i realized i forgot to plug in the plug you have to remove that sits on the right hand side, so shit. but what do you think cause my car works now and the coils are aligned i think it was the last one on the right that wasnt connected, and it is connected now and there is no problem witht he old plugs when its running but i would like to have the NGK's that i bought in the car, you think its worth trying again or could it be somthin else that was causing the shake and etc...