Exhaust Smoke From Injector Pipe?

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Hello,
I had a issue with exhaust smoke in the cab so checked exhaust which was fine. I checked the injectors as I had a fault before so cleaned around to make sure it was seated right. When I started the engine I could see smoke coming from the injector pipe which confused me. What could be causing this? Injector sticking? I have noticed a slight loss of power. Thank you.
 
Could be a micro hole in injector pipe. Careful, the smoke may be high pressure diesel vapour and harmful to skin ect. Had this happen on a tractor.
 
Not only is there risk of fire hazard, the high pressure fuel vapour will easily penetrate skin if you get any part of the body close enough.

Diesel injected under the skin will cause serious tissue damage if medical attention is not called for straight away. The injury can look like a pin prick at first but is extremely serious.

There is a lot of information about this on the internet. If you are at all squeamish, be warned there are some graphic images of the end results.
 
I nearly lost a finger in 1979 from high pressure diesel hitting that finger.
I agree that's it's likely atomised diesel and very dangerous but the engine will be diesel covered- is it?
 
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