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2002 4.3 merc

zuki88.5

New member
spring start up ...replaced plugs, new starter , checked compression ..<br> # 1 # 3 # 5  all  about 126 <br>#6 125  <br>#2 78 <br># 4  100 <br>sprayed with wd 40 and sat overnight <br> checked compression again <br>#2 78 <br># 4  0 checked twice <br>added straight oil to both low psi cyl,<br> will sit for 24 hrs and recheck . <br>my thinking now is that i my have a cracked head from winter <br>I invite any input in the mean time <br>thanks <br> 
 
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