'06 Hesitation starting

[VS06SD]

Hey guys, I have a problem that just started getting real bad today. For the past month or so I have had to give the truck a slight amout of pedal during a cold start. Today I have noticed even while engine warm there is a slight hesitation and delay starting. ie, not firing immediately but a slow rolling increase of rpm while starting. Just minutes ago I jumped of the highway and stopped at the store for 2 minutes and came out and the truck would not start unless I gave it near full throttle and cranked it hard. Only have 10K on filters and getting ready to change them now but doubt thats the problem. Any other thoughts? "O" rings on fuel rail or FICM or maybe something else? TIA for any ideas.

[MDKLES5]

Had the same problem, yet each time I took to the dealer they could not find a problem. I found a posting on this forum, printed it out and took to the dealer. They used it and fixed the problem.

Here in CA, it is not as cold. Problem was only in the AM (initial start). Also it would continue thru the day if the truck was parked for a while.

Your assumptions are correct. O-rings and FICM is what needs to be fixed. At least point the Tech in that direction and he should do that at minimum. I wish I could find that posting as there may be more to it. If I do, I will get it to you. Solved my problem perfectly.

Surprised I am the only respondent to your posting. This is a common problem.
FYI ~ covered under your 5/100 engine warranty. Out of pocket $100.

Best to get it fixed before it gets much colder as it will get much worse.

[VS06SD]

It hasn't gotten any worse in the past week. I know its still covered under the 5/100. I have 90K on it now. It seems to start easier when the engine is cold or cool. It doesn't want to start when its hot for the first 30 - 45 minutes unless I crank it hard with a near full throttle. Now that all our employees are back to work I'm going to set up an appointment to have it looked at before it gets worse.