knocking

It had a little too much oil in it when my neighbor let me use it she had the motor rebuilt before. It’s been making a fast knocking noise/ squeaking noise mainly the knocking with a little bit of the squeaking. Check engine light came on and it was a misfire on cyl 1 I changed the plug and the...

It had a little too much oil in it when my neighbor let me use it she had the motor rebuilt before. It’s been making a fast knocking noise/ squeaking noise mainly the knocking with a little bit of the squeaking. Check engine light came on and it was a misfire on cyl 1 I changed the plug and the...

I got a 1999 Buick Century about a year and a half ago, running synthetic oil, at 149k. All is well so far. I have put all new ACDelco platinum plugs in it (oem type) new fuel filter, and changed the air filter and oil when needed. Had all brakes replaced 2 months ago. When I first start it in...