Sonic (Aveo) The subcompact known globally as the Aveo since 2002 is now the SONIC in North America as of the 2012 model

Chevrolet Sonic
GM Platform: T200, T250, T300

2015 Sonic 1.8l Automatic - Timing Belt

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Old Sep 5, 2019 | 5:07 PM
  #21  
wingnut2001's Avatar
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i recheck the timing, got the cam tool for back of the cams.timing is set right on the money. i guess i will have pull the motor out and return it.no compression in 1 and 4 and some in 2 and 3. i also used some crc in all for cylinders and let it set.still no compression.
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Old Sep 6, 2019 | 5:19 AM
  #22  
WyrTwister's Avatar
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Just guessing , but I suggest you have the valve timing 180 degrees off . Pull # 1 plug and using a long ratchet / socket and rotate the engine until # 1 is coming up on compression . Then check the timing marsk .

Wyr
God bless
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Old Sep 6, 2019 | 8:35 AM
  #23  
tech2's Avatar
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that was suggested to him. that is why I wanted him to pull the valve cover and watch the valves and inspect for damage.
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Old Sep 28, 2020 | 8:42 PM
  #24  
chevyboy@22's Avatar
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Default Timing belt

  • Ticking noise coming from the engine. The timing belt is attached by way of a series of pulleys to the engine's crank and cam shaft. Cause is misfires, oil leaking in the front of the engine
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