spark plug

I changed my plugs not with great ones low on funds at the time. Also changed ignition coils too. But not with great ones either. Could that be the reason I'm still feeling skipping faintly? 2013 Elantra GT GLS 1.8

Hello, I changed ignition coils and spark plugs then battery light flickering and alternator voltage reading 12.6V same with battery. I recharge battery with CTEK but still flickering sometimes and alternator voltage reading is 12.6V. Is ignition coils and spark plugs can be cause of this...

Hi Guys, I was changing my spark plugs and the little grey pin that connects the pigtail to the engine coil broke :( you can see the picture as to what i am talking about. What are my options to change it, i dont want to buy the full cable part. Can i leave the cable connected without the pin...