When I start the car it crank only 2 times and then it stops
Help in trouble
My car F350 Super Duty 6.l 2003 is causing me headaches, I have not been able to find fault in the starter. When I start the car it crank only 2 times and then it stops.( no strange sound) But sometimes he crank normal when I go to work but not when I'm on my way home or shopping for a short time.( 2 New Batterys ,12,7 v) Now I can not trust the car anymore. Can anyone help me in this matter, I would be very grateful.
Einar. Home Iceland.