Add in some new cams, upgraded ignition, replumbed coolant system to bypass stock thermostat and I have a good little motor to match the upgraded tcase I dropped in 2,000 miles ago.
Once an optima goes completely dead they don't accept a charge easily. You need to wire them inline with a good battery and then trickle charge. 90% of the time it works. I've never had a battery hiss and make these sounds before though.
Did a battery test, the battery passed. 13.9v. CCA was 732, rated for 710.
Alternator also passed load test. I did fail the drain test. 2.59A drain.
Not sure if that's from the battery shorting or a short somewhere else. Need to diagnose that.
Anybody got any other ideas? Can a battery that has gone bad still pass a battery test? Thinking i should just toss the battery since the smell, heat and sound is quite concerning.