Keeping Diesel Engine Warm
My dodge dually Cummins engine is very hard to start when cold. At home or camping with hookups I can plug in the block heater but what can be done when boondocking.
Forum Discussion
I have a 2001 Cummins, and I just went out to start it yesterday to drive it to the inspection place. It's about 30° and the truck has been sitting since the end of October, with no battery tender of any sort. It turned over slow, but started after turning over maybe twice.
I didn't leave the key on to heat the intake heater because I wanted to see if it would start as good as it usually does. IMO you have other issues besides an iffy battery. Mine are cheapo batteries that I think are 650cca, definitely not more than that. And they are about 2 years old and were only about $90 each.
Yours is a newer truck, but I don't think your batteries are the main problem. My bet is still on the fuel system, i.e. injectors, lift pump, etc.
I didn't leave the key on to heat the intake heater because I wanted to see if it would start as good as it usually does. IMO you have other issues besides an iffy battery. Mine are cheapo batteries that I think are 650cca, definitely not more than that. And they are about 2 years old and were only about $90 each.
Yours is a newer truck, but I don't think your batteries are the main problem. My bet is still on the fuel system, i.e. injectors, lift pump, etc.
