Use a digital multimeter across battery posts, what is the reading with engine cranking, no jumpers. The generic specs says it shouldn't drop below 9.6 volts. Cranking is starter motor action, not starting. Not only make sure battery has a full charge, make sure battery connections are all good, no voltage drops. With vehicle cranking, the systems get battery voltage, with vehicle running, the systems get alternator voltage, can be several volt difference, if charging system is working properly.
If it cranks good but won't start, have a helper crank it while you check for spark at the plugs, if spark everywhere, use a gage and check proper fuel pressure and check fuel injector pulse. Any applicable trouble codes?
Saturday, February 27th, 2016 AT 10:13 AM