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So I decided to change my spark plugs, now i followed all intructions properly or so I think. I made sure the area was clean before hand , I took out the old spark plugs. now before putting in the new ones I checked to make sure the gap was at 0.28 some had to be changed ( always check even if its pre gaped )..I dont have a torque wrench, just a regular one, so I installed the spark plugs first with hand tight then turned about 1/4 or 9 to 11 on a clock using a rachet. I put some di eletretric grease as well, the only thing I didnt do was put anti seize because i've read many things on good or bad so decided not to go with it. I installed everything back, I made sure the springs where straight and not sideways. I started the car everything seemed find at first actually great car felt and ran better I WAS FEELING GOOD AND HAPPY...BUT THEN.... The next day, turn on my cruze check engine light came on and it didnt feel as good, turbo sounded weaker, car wasnt accelerating as fast and brake pedals felt weak as well and if I parked my car and waited there was a very contant little shaking, even a very faint whitles sound started coming from the engine (at least it seemed like it). BTW I put in the ac delco 41121 gaped at 0.28 and Chevy Cruze 2011 LTZ RS 1.4T
can anyone point out what I did wrong? or what should be my next step? or is their a way to see if my spark plugs are running correctly like if they work?


Thanks in advance guys
can anyone point out what I did wrong? or what should be my next step? or is their a way to see if my spark plugs are running correctly like if they work?
Thanks in advance guys