[cadillac griff]

Opened hood to add wiper fluids noticed engine was shaking a bit much! Don't know if it's normal or something to do with motor mounts but only while I'm sitting at the red light can I feel the car shaking.. I'm still at 650 rpm while sittin n no major difference in driving! I did recently do a spark plug n boot change noticed a vacuum line kept easily coming off the 3way connector ,but i taped it up pretty good to ensure Air wouldn't get thru! Any ideas or suggestions??

 

[Ranger]

It's not normal. It should be dead smooth. Might want to double check your work. Maybe a coil contact spring not seated properly causing a misfire?

 

[Cadillac_Edd]

Sounds like a misfire

 

[cadillac griff]

Awwww shucks I'll check it out! Thx

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I just checked my codes and p0300 is my history, not current! I did forget to mention that I did add a quart of oil because I was low until I can do a complete oil change this weekend! I just looked under the hood in it was a very very slight shake! Nowhere near like two days ago!