Isx low power, black fuel, coolant pressure, and more
06-13-2022, (Subject: Isx low power, black fuel, coolant pressure, and more ) 
Post: #1
Isx low power, black fuel, coolant pressure, and more
Recently my 2010 prostar with an isx has lost almost all power. It’s got a bunch of issues:

Fuel in the tanks and the davco is black. Has black flakes in it.

It’s been losing coolant at about 1 gal/500 miles for weeks now. Coolant reservoir has pressure in it. Every time I take the cap off the coolant level rises as pressure is released

Regen light came on in the last 400 miles. Did parked regen but engine doesn’t reach a steady
Rpm, it stutters and goes up and down. Regen light still on after I did this 3 times.

It’s got some blow-by. Oil is also getting past the turbo going into the pressure side.

Is it possible it’s not the head gasket?
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Isx low power, black fuel, coolant pressure, and more - Downthehaul - 06-13-2022



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