6.6 won't start

Manticore · 04-19-2008, 07:44 AM

sat for a week now it won't crank for more than 10 or 15 sec.
primed the filter but no change
any ideas?

blackdeath · 04-19-2008, 08:48 AM

well wont crank longer then that because of safe guards,, u need to give us , year,mods,,,bla bla bla

Manticore · 04-19-2008, 09:31 AM

sorry,
04, no modifications changed the fuel filter 3 weeks ago
ran fine untill this week,
but haven't really been driving it much lately

Manticore · 04-19-2008, 09:33 AM

spring day here in MD,
77 and sunny
no problems with the truck (silverado 2500) untill this
owned since new
88,000 miles

blueheeler · 04-19-2008, 12:17 PM

Hi, Not sure how much this will help (won't help cranking prob) but 2 weeks ago I had a fuel system service ie changed filter & serviced injectors etc. The next day got in to start the truck but would not fire, so got out and discovered the primer on top of filter was soft so pumped it up & then it started. This happened for the next 4 mornings so took it into a GMC dealer (Cresent City CA) & explained what had happened & what had been done in the service, also adding that before this service i was having no problems. They eventualy decided after speaking with previous service dealer (San Diego)& GMC field rep that they would replace the fuel filter @ no cost to me. The truck was fine for 4 days then same problem. Took it to another dealer (now in Newport Oregon) explained past history & they decided to keep overnight. The next morning of coarse it started !!!
They then decided to pressue test the system & found faulty "O" ring in the bleeder valve & replaced it. Another pressure test found a leak at the bottom of the filter in the drain thingy which they tightened & retested, no leaks.To many words I know but maybe you could check the same things on your truck if it is loosing fuel pressure. Good luck

Manticore · 04-19-2008, 03:31 PM

thanks
that could very well be it, but i can't get very far if the engine won't crank for more than 10 sec at a time.
maybe you know a good scanner to use with this truck?

rkymtndrlr · 04-22-2008, 08:28 PM

trying to get to 911 forum- ran truck out of fuel in front of pump. put fuel in, primed at fuel filter pump. pressured up to rec. bubbles. tightened screw. won't fire. read manual. followed steps. still won't start. HELP
thanks pNl jt