Hi All

First up HAPPY NEW YEAR!!!!!

Secondly I'm looking for some advice. My ZD30 patrol has been having a few starting problems recently.

Here's what happens : The car has been left overnight and I go to start it in the morning. Turn key on, and wait 15 seconds or so for the glow plugs to warm up and then crank the motor. Cranks OK for a few seconds and then starts to slow down. Some times it starts, some times not.... Have a dual battery controller in the car with monitors. Starting battery says its at 100% when I begin, but drops below 50% when cranking with the glow plugs on. Thought the cells in the battery were starting to collapse so bought a new 810 cca battery. Same thing happens. If I connect the two batteries via the controller the car fires up straight away. Had the new battery load tested and they say it's fine. Any ideas? I thought that maybe the glow plugs were dying but I think that would produce less current draw than if they were working. Once the car has been started it restarts straight away and the starter spins quickly.

Cheers
Adam