Guys pahelp naman.

Santa Fe 2008 CRDI model

Problem: when trying to start engine, after the pre heat stage(all indicators turn off after key turning before starting) when i try to turn the engine ON , the starter will redondo and the starter will caught and the rev needle will rise but will suddenly die.

will try to turn it ON again after preheating (siguro a bit longer ng konti) it will caught again sometimes ok na pero minsan inaabot din ng 3 tries.

actually medyo intermittent naman hindi sya ganun kadalas more or less mga 2 times or minsan once a week nangyayari.

last fuel filter change is around 40k km ago so was thinking about if filter me prob, naisip ko lang na glow plug since minsan pag mahaba pre heat time madalang mangyari

any opinions?

any input is appreciated thanks