6.0 is hard to start cold. - Ford Powerstroke Diesel Forum
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post #1 of 28 Old 06-06-2010, 11:05 AM Thread Starter
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6.0 is hard to start cold.

6.0 hard to start cold or after its been sitting a few hours. It will start fine all day ounce you get it stared, but after sitting over night or sitting for a few hours it tough.
When i turn the key I hear 3 pumps: vacuum pump briefly, fuel pump whirling for about 20 seconds and the another pump thats kind of a clicking buzz.

What pump is the clicking buzz I hear? Because when I don't hear that "buzz" she wont start, but once I do, she fires right up.
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post #2 of 28 Old 06-06-2010, 03:32 PM
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the clicking/buzzing is what i think they refer to as the FICM precycling the injectors. i was having issues this last week after a head gasket replacement and wasnt getting the noises i was used to and it wouldnt start. turned out i had 5 injectors that siezed up. fixed that and the noises came back and she fired right up.
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post #3 of 28 Old 06-06-2010, 06:49 PM Thread Starter
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I will have it checked, i just replaced the FICM about 8 months ago.
Did your injectors have to be replaced or was there a fix?
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post #4 of 28 Old 06-07-2010, 08:42 AM
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I think a replacement would have been the best solution but at 300-400 each i couldnt afford that so I was able to remove the electromagnets that are attached to the top of the injectors and free the siezed piston. I dont know why they were stuck but once i got them to move again in the bore, they seem to work fine now.
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post #5 of 28 Old 06-07-2010, 08:54 AM Thread Starter
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Perfect!

Quote:
Originally Posted by baja60 View Post
I think a replacement would have been the best solution but at 300-400 each i couldnt afford that so I was able to remove the electromagnets that are attached to the top of the injectors and free the siezed piston. I dont know why they were stuck but once i got them to move again in the bore, they seem to work fine now.
Perfect! Good to know. Thanks for your input, I'm heading to my diesel guy now to plug in the scanner. Lets pray its something that simple.

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post #6 of 28 Old 06-07-2010, 08:55 AM
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good luck. saved me a ton of money...
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post #7 of 28 Old 06-07-2010, 02:03 PM Thread Starter
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wow!

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Originally Posted by baja60 View Post
good luck. saved me a ton of money...
No codes showed up! My diesel mech said he needs it overnight to get a fresh cold start scenario a start up. He's thinking possibly the ignition block, but confessed he really doesnt know until he can have it at a cold start.
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post #8 of 28 Old 10-18-2010, 01:24 PM
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Find a solution??

I'm having this exact problem. That "buzzing" sound on cold starts just went away on my truck a week ago. I have to cycle the pump twice for it to start smooth... Did you ever figure it out on yours??

Thanks
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post #9 of 28 Old 10-18-2010, 01:41 PM
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I think it was the injectors. after I un-siezed the pistons they seem to work fine now.
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post #10 of 28 Old 10-19-2010, 01:45 PM
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I had the head gaskets done just before Labor Day. Now I have the same symptoms you do. I thought the batteries were bad so i replaced them yesterday. Still slow cranking first start up of the day and after sitting at work for 9 hours. Keith

2004 F350, Lariat, True Blue/Arizona Beige, CC, LWB, 6.0 PSD, Torqshift, FX4, Camper package, captains chairs, power & heated TT mirrors, adjustable pedals, AIC, dual alternaters, power sliding rear window. C-Betr mirrors, ARE K series cap, Bedrug, BFG MT 285/75r16,overhead DVD player, DPPI turboback dual exhaust, gauges, Husky mudflaps, Weather tech vent visors, and Lund bug deflector. Date ordered 12/23/2003. Delivered 2/5/04
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