Cranking but will not start

ibfarmerduramax · 03-06-2009, 04:35 PM

Started noticing last couple of days that my truck is taking longer to start (cranking). I thought that my fuel filter might be bad so I changed it out. This did not help. It just kept getting worst. found a few posts on this site aboutthe water sensor going bad, and purchased a knew water sensor replaced the new filter with another new filter and still nothing. It just cranks (fast) but does not start. I checked to make sure that the old gaskets are not on the housing, and also nothing. I have tried to bleed the system many times and still just cranking. I used my predator and checked if I had a trouble code but do not. Any help would appreciate.

calirider · 03-06-2009, 04:57 PM

When my truck did that it was my fuel filter not being on tight enough. Check your prime and see if its soft and if it is pump it up and see if it will start. I am sure you covered that a couple of times with the new filters but thought I would say that much.

ibfarmerduramax · 03-06-2009, 05:02 PM

yeah its on tight, also I can let it crank for about 40 seconds and it will start.

calirider · 03-06-2009, 05:04 PM

Its on tight but are you still loosing prime somehow and cranking the motor re-primes the lines?

ibfarmerduramax · 03-06-2009, 05:53 PM

Quote:

Originally Posted by calirider

Its on tight but are you still loosing prime somehow and cranking the motor re-primes the lines?

That is what I think is happening but I cant find a leak anywhere.

jettech · 03-06-2009, 06:56 PM

There were a few posts on here about bad filter housings causing loss of prime a while back.Mot sure if it's still a problem with 07's or not.I believe the dealer was replacing the housings.

03-06-2009, 04:35 PM	#1
ibfarmerduramax Diesel Technician Join Date: Dec 2006 Location: Elkview, WV Posts: 289 Garage: active iTrader: (0)	Cranking but will not start Started noticing last couple of days that my truck is taking longer to start (cranking). I thought that my fuel filter might be bad so I changed it out. This did not help. It just kept getting worst. found a few posts on this site aboutthe water sensor going bad, and purchased a knew water sensor replaced the new filter with another new filter and still nothing. It just cranks (fast) but does not start. I checked to make sure that the old gaskets are not on the housing, and also nothing. I have tried to bleed the system many times and still just cranking. I used my predator and checked if I had a trouble code but do not. Any help would appreciate. __________________ 07 LBZ Black Crew Cab Allison 6 speed Line X Liner, Cab Lights, Tow Mirrors, Fox Weatherboots Mats , Weatherguard Tool Box, Escort 8500 x50 Radar Detector, Prodigy Brake Control, UWS Cab Length Nerf Bars, K & N Air-Filter, Predator 40 horse tow tune Katzkin Leather, Air Ride - Rear Bags Center Console, Back Up Camera Goodyear Silent Armor 285/75/16 Cobra 29LTD Nightwatch CB Rugged Tri/fold tonneua cover Westin Brushguard
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03-06-2009, 04:57 PM	#2
calirider Diesel Technician Join Date: Jan 2007 Location: California Central Valley Posts: 486 Garage: active iTrader: (0)	When my truck did that it was my fuel filter not being on tight enough. Check your prime and see if its soft and if it is pump it up and see if it will start. I am sure you covered that a couple of times with the new filters but thought I would say that much. __________________ 2004.5 LLY Dmax/Ally, CCSB, 2500HD, LT, 107,000 Miles 315/70/17 BFG AT on Chrome H2 Rims, Spray-On Bedliner, Billet Grille, Painted Bow Tie (805K), Pinnacle Power 4in. Turbo Back with Muffler: Purchased from T&J, Cognito Leveling Kit: Purchased from Nor-Cal Truck, Nicktane Auxiliary Filter Kit with Cat Filter: Purchased from nicktane.com Last edited by calirider : 03-06-2009 at 04:57 PM.
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03-06-2009, 05:02 PM	#3
ibfarmerduramax Diesel Technician Join Date: Dec 2006 Location: Elkview, WV Posts: 289 Garage: active iTrader: (0)	yeah its on tight, also I can let it crank for about 40 seconds and it will start. __________________ 07 LBZ Black Crew Cab Allison 6 speed Line X Liner, Cab Lights, Tow Mirrors, Fox Weatherboots Mats , Weatherguard Tool Box, Escort 8500 x50 Radar Detector, Prodigy Brake Control, UWS Cab Length Nerf Bars, K & N Air-Filter, Predator 40 horse tow tune Katzkin Leather, Air Ride - Rear Bags Center Console, Back Up Camera Goodyear Silent Armor 285/75/16 Cobra 29LTD Nightwatch CB Rugged Tri/fold tonneua cover Westin Brushguard
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03-06-2009, 05:04 PM	#4
calirider Diesel Technician Join Date: Jan 2007 Location: California Central Valley Posts: 486 Garage: active iTrader: (0)	Its on tight but are you still loosing prime somehow and cranking the motor re-primes the lines? __________________ 2004.5 LLY Dmax/Ally, CCSB, 2500HD, LT, 107,000 Miles 315/70/17 BFG AT on Chrome H2 Rims, Spray-On Bedliner, Billet Grille, Painted Bow Tie (805K), Pinnacle Power 4in. Turbo Back with Muffler: Purchased from T&J, Cognito Leveling Kit: Purchased from Nor-Cal Truck, Nicktane Auxiliary Filter Kit with Cat Filter: Purchased from nicktane.com
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03-06-2009, 06:56 PM	#6
jettech Diesel Master Join Date: Sep 2006 Location: Chicago burbs Posts: 1,393 Garage: active iTrader: (0)	There were a few posts on here about bad filter housings causing loss of prime a while back.Mot sure if it's still a problem with 07's or not.I believe the dealer was replacing the housings. __________________ 2006 Silverado 2500HD ec/sb, 6.6L LBZ, blocked & Fingered, BD exhaust manifold, SD manifold, Airdog 100, S&B cold air kit, MBRP 304 catback exhaust, Tony's PCV reroute, Autometer boost & Pyro on a-pillar, Diablo Predator, 43 gal. Titan fuel tank, Rhino-liner, Retrax cover, TracRac system, Lund Trident bug shield, Schefenacker TTT tow mirrors, Duraflaps, Cobra 18 WX ST II cb, Pioneer AVIC-X910BT head unit, Allison deep pan & filter & Suncoast filter lock with Transynd fluid, MA pump rub fix, Relocated stock trans cooler, Raptor 5" oval step bars,
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