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2007 chevy trailblazer_ls
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1 Posts
Discussion Starter #1
I replaced purge vent selinod after research and having it hooked up (07 chevy trailblazer) and now it starts like it should but there is a knocking noise while running. Is this because the compression changed? I am not very mechanical and before I take it and drop a ton of money for someone to just look at it wanted to see if anyone else experienced this
 

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2008 isuzu ascender
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977 Posts
That shouldn't have had anything to do with any knocking noise.
 
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