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Pop/Backfire help plz

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My problem has started up just as of recently.  For starters, my engine
is a 1.8L JH w/ stock 8v solid lifter head.  What's happening is when I
let off the gas/decelerate, I hear a random pop/backfire sound from the
exhaust and it bugs the hell out of me. I'm not sure if this would be
valve adjustment? I have good exhaust gaskets, new header, punched
through cat, ect.. Anyone have a resolution to my pain?
 
Adam
'83 8v Wolfsburg

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>My problem has started up just as of recently.<span
style=3D'mso-spacerun:yes'>&nbsp; </span>For starters, my engine is a =
1.8L JH w/
stock 8v solid lifter head.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>What&#8217;s
happening is when I let off the gas/decelerate, I hear a random =
pop/backfire
sound from the exhaust and it bugs the hell out of me. I&#8217;m not =
sure if
this would be valve adjustment? I have good exhaust gaskets, new header, =
punched
through cat, <span class=3DSpellE>ect</span><span =
class=3DGramE>..</span> Anyone
have a resolution to my pain?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Adam<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&#8217;83 8v Wolfsburg<o:p></o:p></span></font></p>

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