P0262, P0263 and Low Boost PSI

[ASlowSixOh]

Well good news and bad news today...good news is, my SCT programmer from my Mustang will read my 6.0's codes and data log

Bad news is, the two codes it found was P0262 (#1 Injector Ckt High) and P0263 (Cylinder balance/contribution).

When I took the truck out on the road, I only saw about 4-5lbs of Boost until high in the RPMS, then the max I could get was 16PSI. Blue smoke at WOT over 2100RPMS.

No coolant loss, and cleaned the EGR yesterday.

So....where should I start? Does the combination of those two codes indicate the injector is definetly bad on Cyl #1?

Truck is an '03 F350 Dually, 150K miles.

[jtaylor75]

its either a bad injector or a short somewhere in the injector harness.

[twoicebergs]

That year of truck was notorious for wire rubs. The circuit high could be a spool valve issue or a shorted wire. You could pull the plug and check the resistance of both coils of the spool valve. The readings should be about 1.2 ohms. Make sure you test the correct wires BK-WT, GN-RD.

[ASlowSixOh]

Originally Posted by twoicebergs

That year of truck was notorious for wire rubs. The circuit high could be a spool valve issue or a shorted wire. You could pull the plug and check the resistance of both coils of the spool valve. The readings should be about 1.2 ohms. Make sure you test the correct wires BK-WT, GN-RD.

Wire rubs would make since, seein as how i have intermittent problems starting the truck when it's hot. I'll check that asap. Thanks!