How do I know if I need heads or my rings are.

A COMPRESSION TEST IS HELPFUL TO DETERMINE CONDITION, ALONG WITH OBSERVING POSSIBLE SMOKE OUT OF THE TAILPIPE

BUT HERE'S SOMETHING PEOPLE HAVE SORTA FORGOTTEN ABOUT....IT'LL SHOW YOUR ENGINE'S CONDITION FAIRLY EZ

https://www.2carpros.com/questions/2010-all-other-cars-how-to-change-gears-for-fuel

WITHIN THAT LINK IS THIS ONE (BELOW)---AT THE BOTTOM, EACH SCENARIO YOU CLICK ON WILL SHOW YOU HOW THE GAUGE ACTS, DEPENDING ON THE PROBLEM THE ENGINE IS HAVING

http://www.secondchancegarage.com/public/186.cfm

"SCENARIO 1" IS WHAT YOU ARE SHOOTING FOR.............WHEN YOU CLICK ON EACH ONE, GIVE THEM A FEW SECONDS TO "WORK", READ ABOVE THE GAUGE, AS WELL AS THE EXPLANATION BESIDE IT

THERE'S A LOT MORE STUFF ON "YOU TUBE" ABOUT THIS

KEEP US POSTED ON YOUR FINDINGS

THE MEDIC