starting and running help?
 

alright, so basically i pulled my engine and replaced it for stupid reasons. i got it running drove it around for two hours running perfectly fine, everything was great and it started running like total ass. it will barley hold idle and dies alot, there no power either. looked, i had no vacume leaks, i was getting spark, the air flow meter was hooked and working and i replaced my spark plugs and still no luck, any ideas?

also having start up issues and it constantly seems to be the same thing. my batteryu and my starter, i already got the alternator checked and it was fine. the battery keeps going dead and the alternator too, any idea what keeps killing them?

Do a compression test... :(