Injectors filling cylinders with key on engine off. - Ford Powerstroke Diesel Forum
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Old 07-22-2014, 12:27 PM
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Injectors filling cylinders with key on engine off.

After pulling the heads on a 2006 6.0 I noticed that someone had used a fire extinguisher on the drivers side around the fire wall area,ipr valve was covered also. I'm thinking that the heat screwed up the plastic coating on wires in the harness but didn't effect anything until I moved them to remove the heads. Fuel is going into the cylinders with the key turned on and engine not running causing hydro lock on both sides. Thinking injectors are being commanded to stay open. Doe's this sound right to anyone else?
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Old 07-22-2014, 12:32 PM
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Forgot to mention that all injectors are new.
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Old 07-22-2014, 12:36 PM
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Also before starting ficm had only 40 volts replaced and still 40 volts and kam volts were low. after starting ficm volts went to 48. Can't here glow plug clicking when turning on key light comes on then back off as normal. replaced glow plug module and no change.

Last edited by midnite; 07-22-2014 at 12:39 PM.
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Old 07-22-2014, 01:10 PM
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fuel into cylinder hydro locking?? Who's injectors are these ? are you sure the hydrolock is fuel ??

FICM volts low KAM volts low ?
whats the battery voltage ?

it appears you have had it running can you clarify ?
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Old 07-22-2014, 01:16 PM
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Injectors are from the dealer. yes idled great for about an hour. drove great for about a mile and a half then shut down. after cooling engine would start but run rough and started smoking out the exhaust and around they pipe connection coming off turbo. towed it back to shop with a chain. had the key on to steer. once i got there It was hydro locked. pulled injectors on right side and bumped starter fuel blew #1 but still hydro locked on drivers side.
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Old 07-22-2014, 01:21 PM
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I'm thinking a bad wiring harness allowing injectors to stay open. Is that possible.
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Old 07-22-2014, 01:24 PM
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When I first started it I thought I could smell wires burning but went away and like I said idled great.
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Old 07-22-2014, 01:27 PM
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I also deleted the EGR
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Old 07-22-2014, 01:29 PM
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Head bolts had stretched and damaged both heads. they were milled .008 below min standard but the repair shop said they would be fine.
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Old 07-22-2014, 01:32 PM
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i don't think commanding the injectors to open can hydrolock since you have no oil pressure to actually fire them

but it is a good question cause you verified it is fuel in the cylinder SO hopefully someone chimes in

Last edited by ZMANN; 07-22-2014 at 01:40 PM.
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