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**DeadheadNM** · 11-08-2021, 10:47 PM

Tonight the meter gave similar readings. Not enough juice to start the engine though. Headlights were bright.

I swapped in two Delco 78 series batteries that had voltage readings of 12.3 and 12.7. These fired the engine right up.

Two batteries sure doubles the hassle. Tyler, I’ll lug the original ones to have the cranking amps checked. Suspect one is bad. Meanwhile, I’ll keep the Delco’s in place and see if those get drained by chance.

Thanks and stay tuned. BTW why two batteries w a diesel? Compression so high the starter needs more oommpf?

11-08-2021, 10:47 PM	#7
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,287	Re: Battery drain, read the FAQs Tonight the meter gave similar readings. Not enough juice to start the engine though. Headlights were bright. I swapped in two Delco 78 series batteries that had voltage readings of 12.3 and 12.7. These fired the engine right up. Two batteries sure doubles the hassle. Tyler, I’ll lug the original ones to have the cranking amps checked. Suspect one is bad. Meanwhile, I’ll keep the Delco’s in place and see if those get drained by chance. Thanks and stay tuned. BTW why two batteries w a diesel? Compression so high the starter needs more oommpf? __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland Last edited by DeadheadNM; 11-08-2021 at 11:04 PM.