Hard starting/smokes until warm

[superduty4x4]

For a while now when I start my truck while cold it smokes white/bluish smoke pretty heavily, and the smoke makes your eyes burn like crazy. It will even smoke while going down the road until the temps come up, then it goes away. In addition to that, lately it has been reluctant to start when cold (even in temps that the glow plugs shouldn't be needed). It will usually try to catch a time or two before it fires, then when it does light it belches out a huge cloud of black/gray smoke then the typical white/blue smoke until warm. I'm sure its several issues all rolled into one, but what would be the most likely culprits- bad injector O-rings? Injector issues? Bad seal in the turbo? Something else?

 

[Blowby]

Compression, injectors and glow plugs+relay are the culprit.

1. Injectors leaking so the cyl has raw fuel when KOEO before GP's warm up.
2. GP's are not functioning properly and not able to heat the cyl and/or some are not functioning at all.
3. GP relay not allowing proper voltage to GP's to heat cyl.

Miles on engine, injectors, GP's will help.

 

[superduty4x4]

Motor has 179k, injectors are Hypermax Stage 1's with around 30k on them. Glow plugs and relay were functioning as of ~2months ago but I need to re-test them.

 

[backwoodsboy]

My money is on injectors.
My rag has been doing the same thing since I put the 170xxx stockers back in it.

 

[Blowby]

For a while now when I start my truck while cold it smokes white/bluish smoke pretty heavily, and 1) the smoke makes your eyes burn like crazy. It will even smoke while going down the road until the temps come up, then it goes away. In addition to that, lately it has been reluctant to start when cold 2) (even in temps that the glow plugs shouldn't be needed). It will usually try to catch a time or two before it fires, then when it does light it belches out a huge cloud of black/gray smoke then the typical white/blue smoke until warm. I'm sure its several issues all rolled into one, but what would be the most likely culprits- bad injector O-rings? Injector issues? Bad seal in the turbo? Something else?

The first item on my list is injectors.
Items 1) and 2) This is a sign of too much fuel. Has your programming or tune changed lately?
Bad fuel, run out of fuel, failed pump recently? These can damage injectors.

 

[superduty4x4]

I've been running tunes from Cale (which SUCK) since I put the injectors in. No fuel issues or fuel system issues recently, the truck runs really well. I do have a fuel pressure "issue" but this pump had made very high pressure on both my old 96 and this truck since I swapped the fuel pump in December of 2011. I'm still running the stock fuel pump for now and fuel PSI ranges from 60 to pegged out on my 100psi gauge when running. I've rebuilt the fuel bowl and checked for restrictions in the FPR and all is well. This pump made this kind of pressure on stock tuning and stock AB injectors in my old 96 as well. I know it doesn't seem like a stock pump should make pressure like that and not blow lines or the fuel bowl lid but it has produced the same PSI readings in 2 different trucks with 2 different fuel PSI gauges... I have never been able to figure out how or why it makes so dang much pressure. I suppose the high fuel pressures may have finally taken a toll on the injectors and cracked a nozzle or something?