'06 blue smoke - Ford Powerstroke Diesel Forum
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Old 12-08-2010, 03:22 PM
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'06 blue smoke

my boss has a '06 f 350 auto 6.0 L. he came in 4 days ago with blue smoke while idle & higher rpms. xhaust smells bad 2. took it 4 a test drive & i think power is fine. he said he used a lot of fuel. i really cant rule out theft. no codes with a snap on scanner. checked oil level & smell & i say its good. took turbo tube off @ pressure side of turbo, small amount of oil but no biggie. has no cat so that rules out bein full of fuel. took egr valve out, lots of crap in there. ran it with no egr. still smoke. put it all bak 2 gether. xhaut looked good. took 4 a drive, got out many times & all was good. came in 2 work 2day with same prob. any help on diagnosin?
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Old 12-10-2010, 04:41 PM
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well if your EGR valve was dirty, its possible it could be stuck again. What happens is hard coking deposits get lodged in the EGR valve and dont allow it to close properly. Sometimes if you have severe coking deposits, it requires what they call "decarb" of the intake. It cleans all the deposits out and prevents future problems. check the condition of your oil. see if it is diluted with diesel fuel. That would be a sign of injectors.
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Old 12-10-2010, 05:53 PM
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You should check the down pipe, the CHRA is where these turbos leak oil.
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Old 12-10-2010, 06:17 PM
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take the egr valve back out and start it up with it out. see if a bunch of black coking deposits and thick black smoke comes out of the egr port.
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Old 12-10-2010, 06:59 PM
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Blue smoke is oil. How often Is the oil changed? Are you using a synthetic? If you are running conventional oil with long intervals it could just be a varnish on your injectors. That usually clears up once the motor is warm. That's why I think you are blowing oil in your exhaust if it continues after the motor is up to temp.
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Old 12-11-2010, 06:05 PM
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Quote:
Originally Posted by firefighter317 View Post
well if your EGR valve was dirty, its possible it could be stuck again. What happens is hard coking deposits get lodged in the EGR valve and dont allow it to close properly. Sometimes if you have severe coking deposits, it requires what they call "decarb" of the intake. It cleans all the deposits out and prevents future problems. check the condition of your oil. see if it is diluted with diesel fuel. That would be a sign of injectors.
i did chk oil & don't feel there is any fuel. egr makes sense cuz sometimes it's bad, sometimes a little, other times no probs. i'll start dissasmble mon since i need 2 replace egr cooler. this shud allow me 2 clean manifold well. thax
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Old 12-11-2010, 06:13 PM
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Originally Posted by Fox'sFord View Post
You should check the down pipe, the CHRA is where these turbos leak oil.
thanx 4 reply. not sure what CHRA is
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Old 12-11-2010, 06:23 PM
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Quote:
Originally Posted by Fox'sFord View Post
Blue smoke is oil. How often Is the oil changed? Are you using a synthetic? If you are running conventional oil with long intervals it could just be a varnish on your injectors. That usually clears up once the motor is warm. That's why I think you are blowing oil in your exhaust if it continues after the motor is up to temp.
i'm runnin 15 w 40 rotella t. same as r big trks. 8000km - 5000mi. he idles it more than i like
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Old 12-11-2010, 06:32 PM
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Center Housing Rotating Assembly
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Old 12-12-2010, 08:32 AM
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the CHRA is the center of the turbo where the vanes, solenoid, and oil drain and supply tubes are. if you want, ford recommends 10W-30 Super Duty oil in temps below 30 degrees F. You can run the 15W-40 but its just gonna take a little longer to start with winter coming along fast. are you replacing the oil cooler as well as the egr cooler? 99% of the time, the egr cooler fails due to the oil cooler becoming restricted.
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