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Old 06-27-2013, 09:09 AM
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Running like crap

So I have a 08 f350 6.4 it's all stock the problem is if it sits for a day or just driven its starts chugging or has no power. Once in awhile ill try getting on the hwy it lags starts blowing blue smoke if I get out of the pedal and back in it it's fine.im not what it is plus it seems to be going threw a lot of fuel more then usual I was poss egr clogged its still under warr but there's no engine light any help would be great thanks
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Old 06-27-2013, 10:35 AM
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possibly an EGR issue...
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Old 06-27-2013, 09:32 PM
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Is there a way to find for sure I know how the 6.0 is and how it comes apart but not sure with the 6.4
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Old 08-20-2013, 06:34 AM
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Also check your map and iat2 sensor. Both are screwed into the intake manifold and are pretty easy to access. I was having a loss of power and lots of black smoke. I pulled these 2 out and both were just caked with layers of soot and oil. This is of course from the wonderful emissions crap. I used brake cleaner to clean em up. Truck runs way better afterwards and I have power back
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Old 08-20-2013, 07:26 AM
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^^ this and also clean the ebp sensor and tube. If that's clogged with soot the truck will run like crap.
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Old 08-20-2013, 07:53 AM
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here is before and after pic if i can get the image to upload


After
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Old 08-20-2013, 10:51 AM
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was the map sensor that nasty?
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Old 08-20-2013, 11:32 AM
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No it wasn't as bad, but the hole for the sensor was partially plugged with the same sludge.

It's runs way better, but something is still "off" as it is still smoking more than usual. I've ordered a brand new MAP, which should be in today and I'm thinking about ordering a new EBP too. The tube and sensor weren't plugged, just were a bit sooty and I cleaned all that crap out too.

Another weird thing is the barometric reading on the truck is showing 13 psi and the absolute baro for the Phoenix, AZ area is 14.11. So I'm wondering if that's part of the problem too.
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Old 08-20-2013, 01:12 PM
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I'm not sure about the barometric reading but the new map sensor and ebp sensor should make a huge difference!
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Old 09-14-2013, 08:50 AM
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Where on the engine is that sensor located ill check mine.the dealer cleaned and replaced the throttle body but its still acting up not as much
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