stumped on a power issue

[karmakaze]

so my car won't start.

if i leave my battery charged overnight it will start my car. but after i start it once, it won't start my car again. battery voltage at this point reads 10-10.5ish.

i have had my alternator checked out by autozone, advanced, and a generator shop.

i have had the starter replaced with another used unit that tested good.

i have replaced my altima redtop with a new battery

my battery is in my trunk, and i have ohmed the battery cable out to make sure that there was not a short to ground, (i do have it on a 150amp fuse though).

so i am a little stumped at this point. any ideas?

[slyedog240sx]

At full charge you get 12.7v.Sounds lake a draw that needs traced.You can also do a voltage drop test but it will be hard to run the test leads from the battery in the trunk to alternator. Actually impossible i'd think.

[karmakaze]

well after following the rule of checking everything a third time, i determined that my replacement optima redtop that i bought from advanced was bad. took it back to them, they exchanged it, now it starts every time. at least today. who knows what it will do tomorrow.

now i just need to find out why i keep fouling my Bkr6eix-11 spark plugs.