if i have bad engine rings do i need to rebuild the whole engine?
Aug 30, 2006 at 4:42 PM
Mitsubishi Bad Engine Rings
MITSUBISHI
ROBERTJR20
- MEMBER
- 8 POSTS
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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.
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 5:47 AM
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Suggested Repair
Before considering a rebuild, perform a dry compression test, then a wet test by adding a little oil to each cylinder. Rising compression indicates worn rings; no rise points to valves. Readings over 100 psi are generally acceptable unless any cylinder differs by more than 20%.
Conversation Summary
The owner of a Mitsubishi asked whether bad engine rings require rebuilding the entire engine. The expert advised dry and wet compression tests to distinguish ring wear from valve problems and to compare compression across cylinders before deciding on major repairs.