Long cold cranking and rough initial start - Ford Powerstroke Diesel Forum
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Old 01-08-2008, 10:05 AM
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Long cold cranking and rough initial start

When cold, my OBS takes a little cranking time to start. It always starts, just takes a few seconds. It also runs a little rough once it has started. A friend of mine said it could possibly be the HPOP bleeding down overnight?
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Old 01-08-2008, 10:09 AM
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it could be that, or when was the last time you changed your oil? i'd check your oil level, cleanliness of your oil. and i'd check your GPR while your in there. do a search for rough starts, cold starts, etc. there's a lot of posts on the problem.

good luck

Bishop
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Old 01-09-2008, 08:49 AM
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I was having the same problem, and I just changed the oil a week ago and the Glow Plug Relay. The problem is now fixed and the truck starts perfectly. My bet would be the GPR.
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Old 01-18-2008, 05:42 AM
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i have the same problem and i changed the GPR and also went ahead and changed injectors (needed it anyway 210,000 on original injectors!) changed oil even used a lighter weight 10w-30 and still didnt fix it. could my case be and only be the hpop? it starts a lot quicker when i have my 120hp chip turned on and just barely have the accelerator pushed in.
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