I changed my cranking batteries and since then starting engine has been harder. It takes a longer cranking time to get the engine to start. Any suggestions.
When I worked at a dealer for construction equipment, over 1/2 the batteries were good that customers turned in when they bought a new one. Charge the battery then let it set before you load test it, then check the charging system, wires, ground and check for some battery drain. Did you check the starter?