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Discussion Starter #1
My 97 f-250 with 155,000 miles is smoking a little bit of white/blue smoke at an idle and when i rev it to high rpms it blows a lot of white/blue smoke out the tailpipe. I've read that this is most likely the injector o rings. Does this sound about right?? Also where can I get the kit for a good price?? And I'm not sure on how to make sure all the oil is out of the system like everyone is saying. Can I just take it all apart put it back together then remove the glow plugs and turn it over to blow out all the oil?? Will that clean out all the oil?? Or what should I do ? :confused:
 

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Usually, the most common sign of bad orings is oil consumption.. U will notice this also by your fuel turning blackish instead of blue. Just pull your fuel filter, and look and see if your fuel is good and blueish, or has a black tint too it.... This is due to hi psi oil (500-3000psi) feeding the upper portion of the injector. Below the hi psi orings, is the inlet to the fuel portion of the injector. Usually (35-50)psi. The oil pushes past the the orings and mixes with the diesel fuel. Some will get burned with the diesel fuel, the other goes to the return in your fuel tank, hence the black fuel....... Another thing is, internally worn injectors can cause this same phenomenah....... Back to your issue... It is possible for the upper most orings, on the oil feed side to the injectors,to bleed past into your valvecover rocker arm area, which could cause an injector to possibly not fire as hard, which could lead to some smoke, from an injector not recieving full injection oil pressure....
 

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dieselorings.com has them and he is a great guy
 

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Are you burning and coolant? my guess would be bad O-rings but if there is white smoke then that makes me think maybe injector cups... just an idea..but if there bad its usually alot more white smoke.... just watch your fluid levels see if you can narrow it down. Check your coolant and make sure it doesnt smell like diesel fuel to take injector cups out of the picture.
 

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Discussion Starter #5
Well I dont think there is oil in my fuel filter and I will have to check but I dont think my coolant has any fuel in it either. Ill have to check again though and make sure thanks a lot for the info. I've had the truck a couple of months now and havent really driven it besides out in my field I start it all the time but it needs an oil pan bad so I havent had it out on the road yet.:( Not sure if since I dont drive it this will make a difference on finding out whats going on. It seems to start fine and from what I can tell it idles nicely jus has a little tiny bit of smoke at an idle and then blowes clouds of it when i rev it at high rpm. Not very familar with diesels his is my first one so I jus dont kno :confused:
 

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Discussion Starter #6
Also I noticed a fuel leak the other day running down the backside of the motor and cant seem to find where the heckk thats coming from doesnt look like the fuel filter but idk. Could that be causing smoke maybe ??? :doh:
 

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As far as the fuel leak, look to the the back of the heads where the fuel lines connect to the head. Or the fuel pump. Does it leak into the valley, or just down the back of the motor?
 

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Anyone mention turbo seals? My bosses wife blew the turbo seals out on her 7.3 SD and it thing did exactly what your saying...pull the down pipe back from turbo and see if there is excess oil in/on/around it...just an idea...and the fuel leak might be the O-ring in the banjo fitting on the back side of the fuel pump good luck!
 
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