Long crank time when air or motor is cool - Ford Powerstroke Diesel Forum
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Old 07-27-2009, 09:18 AM
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Long crank time when air or motor is cool

I have an 01 7.3 and it has always fired up within about 2 seconds and here the past week, in Tennessee so temps are 80 or so and low being 65, it has not wanted to start first thing in the morning or if it has sat all day long without being started. Wanting to crank for 10-15 seconds then i let it rest and turn key off then back on and crank again for another 10-15. having to do that a couple times. No smoke during or after being started. Only mod is exhaust and selectable chip.

It will start within about 5 seconds if it has been running recently.

I changed the gpr and its having the same problem, this morning it took about 10 seconds to start the thing, I know some guys that say thats normal, well not for mine lol

What do you guys think, and if i left some info out just let me know.
Thanks!!!

and also sorry for my horrid spelling
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Old 07-27-2009, 09:46 PM
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nothing guys? did i post in the wrong section lol
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Old 07-27-2009, 09:53 PM
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Icp bad??

here is a good place to start
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Old 07-27-2009, 09:57 PM
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Plug in your block heater and see if she fires right up after getting good and warm. That's where I'd start at.
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Old 07-27-2009, 09:58 PM
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at 80 degrees you dont need glow plugs or a block heater...
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Old 07-27-2009, 10:12 PM
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im fixing to check into your link you posted cj ford. Yeah i didnt think there was much help being offered from the glow plugs, it was 90 today and still did it but not to any extent that it was doing when temps in the 70s I think i miscalculated the start times, It used to start in about 1 second like i stated before but now on a long crank to start it takes about 5 seconds if not started by then i will cycle key again and try starting again and it cranks up fine, but thats only on first of the day. rest of the starts are little over 5 seconds, i know thats normal for a lot of people but not for mine, she use to start with about one revolution

also reading that may not have enough oil pressure?? maybe orings in the hpop or somewhere, thats just what im recallin off the top of my head
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Old 07-28-2009, 06:08 PM
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Yeah ideally you would want to have a scanner that you could observe ICP (injection control pressure) while cranking. If it takes a while to build up you may have blown injector O-rings.
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Old 07-28-2009, 07:25 PM
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i didnt get to check the icp today but it started all day at and took about 3-4 seconds cranking time. i know that seems kinda normal but honest my truck has always started within a few revolutions

Is there anywhere to get someone to scan so i can check the icp pressure and not have to buy a scanner???
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Old 07-28-2009, 07:39 PM
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Whats a ***** is that most autozone scanner will only read codes and not data. Have you checked for codes. Low ICP while cranking will store a code sometimes. Also have u checked for fuel leaks. Even a minor leak would let the fuel drain back. It still shouldn't take 20 secs though. Ck for ICP codes.
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Old 07-28-2009, 07:49 PM
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ok i will take it by the parts store, I was exagerating the cranking times in my first post due to my brain not working, the longes its taken is two tries at 5 seconds each, thats an eternity compared to how it used to start,
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