Haze at idle

I'm new to this forum just got a few questions i'm hoping i can get an answer to. I got a 95 eclb 12 valve 0 fuel plate and the afc slid forward. I recently just did a lift pump in my truck (stock replacement) and it starts much better now. Recently my truck started to haze white smoke at idle. I've been reading many forums saying slipped timing and i'm almost sure its the problem. Also trucks getting a little noisly and could probably use a valve lash test. Any ideas of what the haze could be or is it most definitly the timing. Thanks