04 no cold start - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 02-09-2011, 08:00 AM Thread Starter
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04 no cold start

im trying to help my buddy out on his truck. '04, f350, 50k, muffler delete otherwise stock. anyways hes had it in three shops and no one can seem to find the problem. if plugged in it will start right up. if it gets cold, it will not start. all glow plugs are getting hot and working, but it will not start when cold unless plugged up. FICM has been replaced and throwing no codes. any ideas on whats going on?
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post #2 of 17 Old 02-09-2011, 08:52 AM Thread Starter
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further talking to my buddy, batteries are good...even tried placing them on charge over night to see if it helped and it dont. all filters changed and using antigel in fuel. starts when plugged up and runs fine, just will not start cold if its not plugged in.
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post #3 of 17 Old 02-09-2011, 10:19 AM
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If you know all the GP's are hot and it is only when the engine is cold, batteries are good and ficm is good (48 volts), that only leaves the injectors, right? Sounds like the injectors are not taking prime on a cold engine start. When you say "plugged up" I assume you are referring to a Block Heater, right? If so, the heater is warming the oil in and around the injectors which will initiate proper sequence for injection. Only my opinion, but I think you are running most likely a 15W-40 oil, non-synthetic and stiction is affecting the injectors. Just my 2 cents worth, but I hope it helps.
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post #4 of 17 Old 02-09-2011, 10:28 AM Thread Starter
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plugged up does mean block heater. and truck runs great otherwise, only has 50k on it
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post #5 of 17 Old 02-09-2011, 11:03 AM
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It's really hard to diagnose a problem over the Internet, but the fact that it only happens on cold temp starts (meaning outside temp and engine cold) and it starts and runs good with the engine at normal operating temp indicates injectors and most likely stiction. Do you know what type of oil he is running and when was the last oil change?
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post #6 of 17 Old 02-09-2011, 11:07 AM Thread Starter
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rotella 15w40 and 1000 miles ago
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post #7 of 17 Old 02-09-2011, 11:10 AM Thread Starter
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but wouldnt injector stiction have shown issues before it got so cold out? i know my bros 6.0 did. and with only 50k and being stock...would this be an issue already?
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post #8 of 17 Old 02-09-2011, 11:10 AM Thread Starter
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so just talked to him and all injectors were tested to be fine and in good working order
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post #9 of 17 Old 02-09-2011, 11:14 AM
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Have you checked the voltage from the FICM (Fuel Injection Control Module) yet? It's located on the drivers side valve cover. I'll almost guarantee that is the problem. It needs to be at 46v-48v with the key on and then you need to crank the engine and you should see the same voltage. If it is dropping below 43v-44v when cranking, it will NOT start. Here's a link to check the voltage. After you check it, post your findings and we can go from there. http://www.bscustoms.net/diesel/FICM.pdf You need to do this test when you can replicate the no start issue. The injectors can pass a buzz test with a bad FICM.

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post #10 of 17 Old 02-09-2011, 11:36 AM Thread Starter
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the FICM was replaced and didnt fix issue
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