Originally Posted by Basstrip

92 300SD starts with no hesitatin when is cold, but ones its warm strugles to start. I been reading on few threads about starter giving problems when are worn out, it will take a lot of juice from the battery and eventually will drain out battery. I also suspect on the alternator if voltage regulator acting up. My question how to check starter conditions and how to check voltage regulator alternator for proper funtion before expend $$$ on either part. I also clean up battery post battery is 9 months old, replace alternator also 9 months ago, install a new ground #4 wire from the chasis to engine block check for connections at started and alternator every was tigh up. Please advise.