Saturday, December 23rd, 2017 AT 7:29 PM
I changed my spark plugs from NGK zfr5f-11 to Champion 318cc (RC12MC4) and before I got the wrong size they did not fit but some how it got stuck in their spark plug hole. I had to fish it out with needle nose pliers not much of a problem then went and got the proper plugs and everything went in the way it is supposed to, but when I start the vehicle the engine shakes like crazy and when I put it in reverse it has a pretty loud knocking sound. I know it is December 23, but I need help ASAP. Please someone help!