EVO All Evo Model Discussion

Rear cyl Pop and backfire!!

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Old Mar 19, 2020 | 04:23 PM
  #11  
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Originally Posted by texashillcountry
I think it's time for a leak down test.
Or a sticky lifter keeping the intake valve open slightly.
 
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Old Mar 19, 2020 | 06:28 PM
  #12  
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I can't open the link.. but it does sound like it's time for compression and leak down testing..
 
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Old Mar 19, 2020 | 08:11 PM
  #13  
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Look for a crack in the Y section of your exhaust

carl
 
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Old Mar 19, 2020 | 09:12 PM
  #14  
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^^^^ That's where mine was cracked. Once I welded it back up, no more popping.
 
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Old Mar 22, 2020 | 08:28 PM
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By listening to her Id definitely do a compression test, leak down test and check the valve adjustment, make sure your valves are opening and closing correctly
 
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Old Mar 22, 2020 | 08:34 PM
  #16  
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white to blueish smoke is usually an indicator of oil, looks white in the video? possible cracked ring
 
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