6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

6.4L Low compression

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Old

Nov 7, 2012 | 05:08 PM

#1

notch83

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6.4L Low compression

I am losing compression into the crankcase. Can this be a possible injector stuck open?

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Old

Nov 7, 2012 | 07:04 PM

#2

senix

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From: Frederick, MD

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no...and how do you know you are loosing compression? Rings or valve issues.

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Nov 7, 2012 | 08:36 PM

#3

notch83

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The shop that is at has done a compression test and said that I am losing compression into the crankcase. They are telling me the piston melted but I am not convinced. It was running perfectly normal then all at once it started running rough and puffing white smoke.

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Old

Nov 8, 2012 | 04:55 AM

#4

senix

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From: Frederick, MD

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Heads are gonna have to be pulled. White smoke can be an overfueling issue or coolant as well.

Either way the heads need to come off to take a look.

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Old

Nov 9, 2012 | 01:02 AM

#5

UGA33

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From: Cartersville, Ga

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Probably cracked a piston. What cylinder is it that is low on compression?

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