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06 F250 New egr valve, truck smokes after idling at stops and is lacking a lot of power

2K views 5 replies 6 participants last post by  krazyk 
There is much that is wrong with what you are being told.

There isn't a DPFE sensor on a 6.0L

You do not have a Positive Crankcase Ventilation system (PCV), you have a Closed Crankcase Ventilation system (CCV). The difference is that you should not pressure up the crankcase (not as much anyway).

Venting oil into the intake from the CCV is a common occurrence, it is designed that way. Thing is, you shouldn't leak a LOT into the turbo inlet. The coalescing element that knocks some of the oil out of the CCV vapors might be bad, who knows. If you have old CAC boots, they will degrade from the oil. It is normal. Silicone boots are better then the originals at resisting the oil's affects.

We have NO WAY of telling you if you have more oil than you should that is getting into the intake - EXCEPT - you need to have a test done to see if your crankcase pressure is excessive. Numbers don't lie. Oil shouldn't be SPRAYING from anywhere.

Can you verify what the fuel level ACTUALLY is in the tank? The level indicator might not be accurate. Making sure you are getting good fuel and good fuel pressure is critical.

Hopefully they installed an OEM EGR valve. Aftermarket ones can cause problems.

Are you losing coolant? You MIGHT have a leak in the EGR cooler. That can cause white/gray exhaust smoke.

Your turbo might be sticking, or your EBP sensor may be bad, or your EBP sensor tube might be plugged, etc. Maybe there is a small hole in the MAP sensor hose. We simply need more information

You need to invest in your own scan tool. ForScan on a Windows laptop is best, but the Lite version of ForScan on a smartphone is as good as most people need. You will need an adapter to communicate between ForScan and your trucks PCM. A lot of people ignore the advice of getting their own scan tool. Simply put, they are deciding to remain at the mercy of a shop when doing so (this can be both good AND bad - depending).

White smoke can also be an injector dumping fuel. If you have that, it would be wise to fix that ASAP.

Get ForScan so you can do the troubleshooting yourself (AND answer our questions)
Scan for codes
Post current code numbers - I bet you have some again!

Then you need to get a fuel pressure sensor and gauge, or at least have a KNOWLEDGEABLE shop test the fuel pressure.

LASTLY - sometimes radiators leak because there is too much pressure in the coolant system. This excess pressure typically comes from leaking head gaskets. Eventually you need to put a pressure gauge on the coolant system. The easiest way is to tee in a gauge into the small vent hose that goes from the top of the radiator to the degas bottle.

EDIT - The A/C stuck on defrost could simply be a lack of vacuum. I find it hard to believe that they wouldn't have told you that - except they do not appear to know the engine or the truck very well. Vacuum leaks can be anywhere (heater valve vacuum hose, 4x4 hubs, blend door, etc). If it is more than that, then I wouldn't spend a lot of money on the A/C until the serious things were taken care of.
 
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