I have a e350 ambulance,I am getting 12.2 on the volt meter and its not starting on 1993 Ford E-350

I purchased 2 920 cranking amps batteries and when I tumble the motor it seems to tumble slow

by in Culebra, PR on January 16, 2013
4 answers 2 comments
ANSWER by on January 16, 2013
you could have a bad starter
COMMENT by on January 20, 2013
The starter was just serviced,thank you.
ANSWER by on January 16, 2013
Also, have alternator checked for proper recharge levels.
ANSWER by on January 16, 2013
is battery voltage at the starter?
ANSWER by on January 17, 2013
diesel i assume. ck starter for amp draw.
COMMENT by on January 20, 2013
Hi,thank you for your reply....how to check for amp draw?