were u able to resolve this issue? pano po? i have the exact same problem po.

White smoke when cold, and which lessens as engine temp rises is most often a sign of poor compression. Compression improves as temp increases due to thermal expansion of pistons. To be sure, ask Isuzu to perform a compression test on your engine when cold.

Ano mileage mo?

Nake experience na ba ng overheat ang engine mo?

Check injection pump to engine timing. Has your pump been previously repaired, removed, and/or reinstalled?

Madali mo din makita kung marami ang oil gasses sa blowby pipe/hose. Try mo tanggalin ang hose or dipstick. Pag nabawasan ang white smoke, huli mo na ang cause. Piston ring na ang problema kung ganyan, dahil ang blowby gasses ay nanggagaling sa compression gasses na nakakalusot sa piston ring and sleeves.