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06 6.0 hard start/no start
New to the site and looking for a little direction.
I have an 06 6.0 with just short of 100K miles. Recently it has been taking about 5 seconds to fire. I replaced the bad ficm about 3 weeks ago which helped the rough idle at start, but no help with the slow start. I also changed both fuel filters and had the truck serviced two days ago.
I made a 400 mile trip yesterday with no issues other than the initial slow start. after the truck was warmed up it seemed to start a little faster,
Wife ran up to the store today and when she came out, first time ever... No start. I called for the hook. When I got to the store I tried to start the truck and it would crank but no start. After 30 minutes of waiting for the tow truck I tried it again and it cranked for 5-7 seconds and it did start although it kind of stumbled a little when it first fired.
I went ahead and had it towed home and dropped. It again started with the stumble when it fired and I pulled it in the shop. Even though there was no Check engine lights I threw the scanner on it and it has 0 codes.
So the short of it is I am looking for a little direction on where to start looking.
Any help would be greatly appreciated.