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Old 07-10-2012, 06:06 PM
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Work Truck Down, Need answers ASAP!!!

'06 F250 with 175,000 miles, had rough running at start, ran fine after warmed to temp. scanned it and had 2 injectors with low contribution code. Checked voltage of FICM at ACC and at idle and had 48volts at both. after a month had a third injector hive low contribution code. Decided to change all injectors while i was in there, considering the milage. just fired it, ran a little rough with codes on all injectors. I figured that was normal until oil and fuel got back in there. ran for 5 min cleared codes and went for a test drive around the block and it runs better than before. Came back, scanned and only had injector 1 still giving me a low contribution code. but more importantly it was boiling over! the water pump was replaced by Ford about 10,000miles ago. changed the thermostat and ran it while it was off to see flow at idle, seemed ok. here is one other thing. when Ford refilled the coolant system I supplied them with distilled water because I wanted to do a flush and refill with better coolant than what they offer. Their "Diesel tech" decided that hose water was a better way to go. To my surprise I ended up with rusty water... I recently did a flush with Zerex and it cleaned it out but A LOT of chunks of rust came out. I tried to back flush my radiator and found that it is very restricted at low hose pressure. I tried to seal it off and blast out anything in there until it ran clear but doesn't seem to flow like i think it should. New radiator? I cant think of anything else that could cause such a quick boil over. Please help, I cant work without my truck. Thanks in advance
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Old 07-10-2012, 07:31 PM
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Do you currently have a monitor to check batteries, and ficm? Do you have the blue spring update, have you checked the fuel pressure, do you have motorcraft filters. Something is causing your injector failure, that is why it is important to have a monitor. It would not matter if you would have run distilled water in it, it would still have clogged with rust. Yes your radiator is probably screwed. Can you check your deltas, i'm guessing your oil cooler is clogging at this point also.

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Old 07-10-2012, 08:43 PM
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Radiator for sure. Rust=bad day
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Old 07-10-2012, 08:59 PM
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Batteries are good, ficm checks out as far as voltage out put. I don't know what blue spring is. I shoul add that I have the bulletproof diesel EGR and External oil cooler. Oil temps are good staying below 200. Always run motor craft filters
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Old 07-11-2012, 03:14 AM
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You need to check fuel pressure.

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Old 07-11-2012, 05:02 AM
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Hvae you scanned it for codes? Mine had the same thing happening and I had a PO611 code for the FICM and it was some sort of performance error code. Truck would run rough when cold but fine when warmed up.
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