bad engine rings

MITSUBISHI
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ROBERTJR20
  • MEMBER
  • 8 POSTS
if i have bad engine rings do i need to rebuild the whole engine?
Aug 30, 2006 at 11:42 PM
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BESTBET777
  • ASE Certified Mechanic
  • 89 POSTS
  • ASE Certified Mechanic
First get a compression test dry/wet done to determine if iit's valves or rings.

After doing dry compression test then squirt a little oil into each cylinder, if compression raises it means rings, if not it means valves.

Also determine compression differences in each cylinder, if compression is over 100 psi you are probably OK unless there is more than a 20% difference in any cylinder.
Apr 19, 2007 at 12:47 PM
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