blue smoke at idle - Ford Powerstroke Diesel Forum
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Old 01-18-2008, 01:22 PM
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Angry blue smoke at idle

07 6.0..... once i have idled for a period of time... either 15 mins or an hour, once i accelerate to highway speed and then stop at a light it begins to blow blue smoke from the tailpipe. dealer states the motors are not designed to idle..... therefore builds carbon.... replaced turbo... cleaned turbo, replaced egr valve 3 times now..... does anyone have similar issues?? and is there a ford recall or fix for the problem??? does the lemon law come into effect??? any input would be great....
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Old 01-18-2008, 05:22 PM
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Is their any other issues with the truck? I.e driveability problems?
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Old 01-18-2008, 05:33 PM
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nothing really.... it has the hesitation at take off which i am told is the turbo-lag
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Old 01-18-2008, 05:37 PM
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they also replaced a fuel injector previously.... the dealer states it is not suppose to idle for extended lengths of time. they believe that is the reason it is doing it. each time they have repaired it the remedy lasts less than 24 hours and its right back to square 1... even with the new egr valve and new turbo....
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Old 01-20-2008, 07:39 PM
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Well, extended idle issues won't crop up in 24 hours. Usually trucks that have been idled a lot have excessive carbon build up in the exhaust, turbo, and egr systems. This usually clogs up the turbo vanes, and jams the egr valve.

Try putting some good injector cleaner like FP3000, PS, or similar for a couple tanks, and drive the mess out of it and see if it clears up. These engines do like to be run pretty hard. Also avoid extended idling, and make sure you give it some cool down time after running it hard. Also why do you let it idle?? These things burn huge amounts of fuel idleing. Unless you need the engine running for heat, or power for lights accessories, etc, it's best to shut them off if they are going to be still for more than about 10 to 15 minutes.

Also, you might want to make sure your egr is working. It's pretty easy to clean it. Check your oil level also. Do you run synthetic oil? What's the mileage on the truck???
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Old 01-21-2008, 01:43 PM
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the truck idles because im in the road construction idustry.... lights.. flashers etc.... also alot of slow driving.. 5-10 mph most of the day. i try to "blow" it out by running it hard occasionally through the day.....

it has 16000 miles on it..... and a brand new turbo with less than 300 miles on it... and a brand new egr valve.... at the present moment it is doing better... but still the occasional smoke.....
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Old 01-21-2008, 01:47 PM
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I build bridges, and i idle 2-3 hours a day, with my 6.0 (no cat) had no problems, i think maybe your cat isnt staying at temp causing the smoke when it does???
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Old 01-21-2008, 01:50 PM
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so you think removing the cat conv would help the situation???? also have you heard of blocking off the egr???
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Old 01-21-2008, 03:11 PM
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Yes, the cat removal, and egr block would help.
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Old 01-21-2008, 03:14 PM
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what is the downside of blocking the egr???
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