6.0 no start

[nathan]

OK here is the issue. Started truck to flush coolant, ran great shut it off and would not re-start. Acted like just hitting on one cylinder. NO codes are present. Did a buzz test and only 1 injector could be heard. If I unplug any injector the scanner will show that. Sent the FICM to get tested came back no problems. Made a jumper wire to go from number 1 cylinder that was buzzing to test the other 7 and they would work off of the number 1 wire. Installed new injector wiring harness and still no go. Any ideas or has anyone seen this issue before?

[nathan]

I'm going to call this one fixed. Someone suggested adding seafoam to the engine oil thinking maybe the open or close coils where stuck. Plugged the block heater in to warm the engine added seafoam cranked and cranked. Truck started and ran like crap"missing on 4 cylinders" let idle for about 20 minutes and started to clear up. Now hitting on all 8 and sounding good.

[spastik monkey]

so how did all 7 coils get stuck at once? that's weird

[nathan]

Not sure. It was running good then shut it off and would not re-start. Messed with it for about a week trying to get it to start. Was about to put new injectors in it when a guy suggested trying the seafoam.