2013 ISX15 CM2350 EGR Tune & Coolant Leak

[kozakvod]

Coolant pressure test...4 clamps found with leaks. Hopefully that problem solved.

Preformed several test of the fuel system.
~ Fuel pump was replaced 200k miles ago
~ Injector leak down found no issues, well within OEM spec
~ In fact, all test were within OEM spec.
So why that 1239 fault is periodically coming on and off, just don't know. Engine is running well, plenty of power.

Also found out that this engine was rebuilt at about the same time as the fuel pump replacement.

Guess it's time to stop looking for the ghost and go haul some cars.

[Waterloo]

(03-10-2018 )kozakvod Wrote:  Coolant pressure test...4 clamps found with leaks. Hopefully that problem solved.

Preformed several test of the fuel system.
~ Fuel pump was replaced 200k miles ago
~ Injector leak down found no issues, well within OEM spec
~ In fact, all test were within OEM spec.
So why that 1239 fault is periodically coming on and off, just don't know. Engine is running well, plenty of power.

Also found out that this engine was rebuilt at about the same time as the fuel pump replacement.

Guess it's time to stop looking for the ghost and go haul some cars.

Fuel actuator bad? How many miles on the truck?

[kozakvod]

(03-10-2018 )Waterloo Wrote:  

(03-10-2018 )kozakvod Wrote:  Coolant pressure test...4 clamps found with leaks. Hopefully that problem solved.

Preformed several test of the fuel system.
~ Fuel pump was replaced 200k miles ago
~ Injector leak down found no issues, well within OEM spec
~ In fact, all test were within OEM spec.
So why that 1239 fault is periodically coming on and off, just don't know. Engine is running well, plenty of power.

Also found out that this engine was rebuilt at about the same time as the fuel pump replacement.

Guess it's time to stop looking for the ghost and go haul some cars.

Fuel actuator bad? How many miles on the truck?

430k