06 F350 hard start - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 01-09-2009, 07:54 PM Thread Starter
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06 F350 hard start

A friend of mine is having a problem with his 06 F350, bone stock with no mods. When he goes to start it, it takes 5-10 tries to get the truck to start. Once it starts, it runs fine. The fuel filters are brand new, so that's not the issue. He recently changed the batteries, but it had the same problem before he changed them.

Anybody got any ideas? I'm thinking he may have a glow plug issue since it runs fine once it finally starts. I've heard of high pressure oil leaks causing hard starts too, but I'd think it would run at least a little bad with an issue like that. The truck is under the 100k warranty, but he's afraid it will be something that isn't covered, so he wanted some ideas before he takes it to the dealer.


I just talked to him again, and he said the truck seems sluggish when he's driving, so that makes me think even more that it's a high pressure leak.

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Last edited by tech10002; 01-09-2009 at 09:04 PM.
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post #2 of 4 Old 01-11-2009, 12:25 PM
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I had a high pressure oil leak with caused the truck to start hard when it was warm or cold. Just recently the truck was starting hard and it kept getting worse until It wouldn't start, it was the FICM this time, by the time I got it to Ford and had it diagnosed $250.00 then the FICM $970.00 and then the labor, I wanted to cry.
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post #3 of 4 Old 01-12-2009, 03:19 AM
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if this problem didnt occur before he replaced the fuel filter then i would go there first new doesn't mean good and he could simply be suckin air thru the seal on the filter to tight and too loose equals hard start tell tale signs of suckin air is hard start plus usually white smoke on start up and depending on how bad you air leak is rough idle and potentially poor accelleration a loud clanking/smacking noise at idle and a variety of other potential problems depending on how bad a leak there is
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post #4 of 4 Old 01-19-2009, 07:50 PM
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I too had this problem for 2 mornings in a row. I was in the Lake Tahoe area and morning temp was around 25. I thought it could have been many different things and when I finally got it started I opened the hood and that is when I realized that the passenger side battery terminal (+) had a smaller red wire going to it and the wire terminal was loose. Tightened it and all good so far... Lots of white smoke when problem was occurring.
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