^

I used to own one and I'll just share my experience with it.

First you have to make sure the alternator is charging properly, by installing a cigarette port volt digital display to monitor it.
13.5V- minimum voltage when alternator charging at heavy load AC and headlight on.
15.3V-max voltage when alternator charging the battery without load, or it will blow the solution.

If the voltage is below 12V, it will be hard for it to start.

Second almost na-experience ko na rin lahat yung naranasan mo at nagawa ko na rin yung mga nagawa mo.

Nung nahirapan na akong magstart lalo na sa umaga ay nirekomenda ng diesel mechanic na i-over size na daw yung piston ring.
Hindi ko na pina compression test, dala na rin na bago pa ako sa diesel, pero naging maayos naman ang kinalabasan although later on after sometime parang nahirapan na ulit mag-start especially sa morning kaya binenta ko na at bumili na ako ng Ertiga.

HTH.