Popping noise during acceleration after turbo cleaning? - Ford Powerstroke Diesel Forum
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Old 01-12-2014, 08:48 PM
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Popping noise during acceleration after turbo cleaning?

It's a 2005 F250 6.0 with 103,000. I had a stored code of P0405 and elected to pull the turbo because I was blowing black smoke in park at 2,500 rpm. I cleaned the majority of the rust that everyone speaks about and then used anti-seize compound on the fins and the pivot points. On the bench everything was operating smoothly. I did lose some oil from the turbo but was told that it re-fills itself back up once running. I put the turbo back in with a little effort but the y-pipe was a pain in the a$$ to get back into the port on the turbo. I left the EGR unplugged and fired it up. After running with the factory high idle mod for about 20 minutes I took it for a ride to see if I had boost. I had good boost but now I have a "popping" noise that comes and goes when I hit the throttle. Could this just be the y-pipe not seating all the way into the turbo or the EGR being unplugged. All the band clamps including the turbo were tightened by hand so I wouldn't greak them with air tools. I didn't have the "popping" noise before so it must have been I didn't get back to original position. Also, what is the 3/4" pipe that is under the turbo that that goes into the intake. I noticed it after I removed the turbo and it was just laying there. It has a u-shaped clamp welded to it that has l-shaped legs that appear to lock themselves into the intake manifold. i had to use a rubber mallet and a long flathead screwdriver to put the legs back into place.
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