I have a 2003 with 5.9 in it stock no mods. Lately when I go to start it turns over 6 to 8 times before it fires off. IT idles fine runs good smooth good power good fuel mileage it has 170,000 miles and until a year ago when 2 micron filtration was added it had stock fuel filtration. I bought the truck new the injectors are original. Any idea where I should look would be helpful. Thanks