My 03 G35 is coming to the 60K mark so I replaced all my spark plugs ext.. when I pulled on of the coils out I knida broke off the rubber piece so it kinda came apart. I tried to put the rubber boot back on and put in the new spark plug etx.. bolt everything back together and crank the car ova. The engine felt weird like it was running on 4 or 5 cylinder vs all six and also shaking. So my conclusion was it must be the coil that I broke the rubber seal off. Is that the problem you guys thing that is wrong and why my car is acting the way it is. I had to order a new coil from the dealer which I will be putting in today after work. Hopefully that will fix the problem.

comments?

 

Ouch, sounds like you have a busted coilpack. Very expensive item... I know since I replaced all six on our Maxima. When the Maxima's coils went bad, the car ran very rough and idled like ****! Bend over and get ready to pay up.

 

Have you checked the firing order?

 

I replaced the boken coil.. put everything back together and the car is still the same.. with a hickup.. one or more pistions isn't firing. My check engine light is blinking. do you think it has to do with the spark plugs that i put in? Laser Platiums NGK which is an OME plug? Part Number: PLFR5A-11

 

went to the NGK site and noticed this about gapping.. could that be the issue im having?

Since the gap size has a direct affect on the spark plug's tip temperature
and on the voltage necessary to ionize (light) the air/fuel mixture, careful attention is required. While it is a popular misconception that plugs are pre-gapped from the factory, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for. Those with modified engines must remember that a modified engine with higher compression or forced induction will typically require a smaller gap settings (to ensure ignitability
in these denser air/fuel mixtures). As a rule, the more power you are making, the smaller the gap you will need.

A spark plug's voltage requirement is directly proportionate to the gap size. The larger the gap, the more voltage is needed to bridge the gap. Most experienced tuners know that opening gaps up to present a larger spark to the air/fuel mixture maximizes burn efficiency. It is for this reason that most racers add high power ignition systems. The added power allows them to open the gap yet still provide a strong spark.

With this mind, many think the larger the gap the better. In fact, some aftermarket ignition systems boast that their systems can tolerate gaps that are extreme. Be wary of such claims. In most cases, the largest gap you can run may still be smaller than you think.