My truck had the white smoke at startup something terrible pretty much since new. I put the FASS on over the summer and the last couple of weeks we have seen some really cool mornings and I have not even had the slightest puff of smoke. I assume that having higher FP has something to do with it. Anyone else experience this? I'm just glad that I don't smoke out the street anymore when I start it up in the morning.

 

white smoke is normal with a cold cylinder. It even says it in the owners manual.

It's possible you have a injector problem also. The feed pressure shouldn't have anything to do with your start up smoke.

 

I've had white smoke a couple of times in 25K, my first response is to dump in a mix of PS/MMO - excellent combination to CLEAN the injectors. Like tritont said, normal with a cold cylinder, if it goes away in a few seconds to a minute or so. If it persists beyond that try cleaning the injectors, that has taken care of my white smoke right away. I had the white somke flash, it's useless, did not do a thing, except for maybe mess with some programming you did not want messed with in the first place. tritont is also right about the pressure, has nothing to dow ith start up smoke. Cold cylinder, dirty injectors first, then injector(s) after that.

CD

 

My white smoke turned out to be an injector leaking down overnight. They found it and replaced it and the smoke is gone.

 

Well, if it wat a bad injector then it fixed itself. If it was a dirty injector then the cleaners I have been using all along didn't work until now. I'm convinced that having higher FP has solved this condition, because everything else I tried didn't phase it.