LB7 Cranks but wont start - Page 2

aturking · 12-12-2012, 09:29 PM

if you know its from the filter housing, just delete it and put in the airdog. Will filter better anyways. Dont worry about being new to diesels. Knowledge comes with time and experience. Stay on here and you will figure it all out in no time. If you need anything let me know.

Andy

aturking · 12-12-2012, 09:29 PM

Diesels are more fun

**Bonomax** · 12-12-2012, 11:11 PM

Quote:

Originally Posted by JHuber219

is it pretty easy? Im still pretty new to diesels. They scare me a little bit. And yes this morning i could smell fuel but cant find where its coming from. Im sure its from the filter housing. Just praying I can bypass that with the air dog and it fires right up.

i deleted my stock fuel filter 2 months after i installed my air dog. i think it made alil difference in throttle response because stock fuel filter is pretty restrictive and i think it defeats the purpose of the lift pump to try to push thru that then to CP3 aka injection pump. i also modded the air dog to CAT filter on it. i watch my balance rates alot and it hasnt change one bit since i put the air dog on and that was over year ago.

**Meshanic** · 12-13-2012, 06:57 AM

When you get your air dog it'll come with extra half inch hose. Use that hose to bypass your filter housing. You'll see it's very simple. Just make sure you loop the hose wide enough so it doesn't kink.

JHuber219 · 12-13-2012, 04:16 PM

Thanks for the advice guys.. Ill post after I get my air dog on and let you know if I had any luck!

JHuber219 · 12-16-2012, 08:46 PM

Hey Guys, I got my air dog 2 on and my fuel filter bypassed. Wasnt bad at all. BUT!

Now the truck will start, but its very inconsistent. Sometimes it fires right up, sometimes it cranks for 10-15 seconds then starts. does start every time. I feel like its lacking some power but of course it may be in my head. Any ideas.

**05 3500 2wd** · 12-16-2012, 09:46 PM

I think you are back to as posted in the beginning. Check your injector balance rates.

Cowansauto · 12-17-2012, 07:25 PM

As always, check to see what current codes and history codes are showing. You will need a scan tool that reads more than just the basic codes though, like the BCM, PCM, etc. May help point in the right direction. Im facing the same issue and in the service manual I have, the second step mentions codes that lead to the main issue at hand.

12-12-2012, 09:29 PM	eBay Motors #11 (permalink)
aturking Junior Member Join Date: Jan 2012 Location: Morgantown, WV Posts: 166	if you know its from the filter housing, just delete it and put in the airdog. Will filter better anyways. Dont worry about being new to diesels. Knowledge comes with time and experience. Stay on here and you will figure it all out in no time. If you need anything let me know. Andy __________________ Andy Work Trucks: 2003 Chevy 2500hd lb7 WT sclb stock 2006 Chevy 3500 srw lbz LT3 eclb stock LBZ soon

12-12-2012, 09:29 PM	eBay Motors #12 (permalink)
aturking Junior Member Join Date: Jan 2012 Location: Morgantown, WV Posts: 166	Diesels are more fun __________________ Andy Work Trucks: 2003 Chevy 2500hd lb7 WT sclb stock 2006 Chevy 3500 srw lbz LT3 eclb stock LBZ soon Last edited by aturking; 12-12-2012 at 09:33 PM.

12-13-2012, 06:57 AM	eBay Motors #14 (permalink)
Meshanic All In Join Date: Jan 2011 Location: West Texas Posts: 86	When you get your air dog it'll come with extra half inch hose. Use that hose to bypass your filter housing. You'll see it's very simple. Just make sure you loop the hose wide enough so it doesn't kink. __________________ cc/sb lb7, lowered, cut & delipped, lbz rods, keyed, balanced, ati, so cal flex, studded, +40 nozzles, going 360/480 from SDP

12-16-2012, 09:46 PM	eBay Motors #17 (permalink)
05 3500 2wd Duramax Lifetime Supporter Join Date: Aug 2008 Location: Pueblo, Co Posts: 728	I think you are back to as posted in the beginning. Check your injector balance rates. __________________ Clifford is a 2005 GMC Loaded SLT 2wd with; true cold air intake mods, ported LBZ turbo inlet mouthpiece, AFE Inter cooler pipe, Diamond Eye down pipe, BD drivers side manifold, Silverline 4" S/S exhaust, EGR Blocked, EFI Live DSP5 By Idaho Rob, Bully Dog pillar mounted outlook monitor, V2 radiator, thermostst controlled oil cooler, 19.5" aluminum wheels with factory lug covers, Goodyear G647RSS 225/70/19.5, BF Xenon 6000k Headlights Low & Hi, Air lift Remote control 5000# air bag system, Rear mounted under the bumper halogen lights, EZ down Tailgate assist, Put co S/S mud flaps, compete interior wood dash kit, Dual Liner 3 piece bed liner with rubber floor mat, Roll-N-Lock tonne cover with tail gate lock, and AVS in channel vent visors.

12-17-2012, 07:25 PM	eBay Motors #18 (permalink)
Cowansauto Junior Member Join Date: Oct 2012 Posts: 62	As always, check to see what current codes and history codes are showing. You will need a scan tool that reads more than just the basic codes though, like the BCM, PCM, etc. May help point in the right direction. Im facing the same issue and in the service manual I have, the second step mentions codes that lead to the main issue at hand. __________________ 2002 Chevy Duramax-Crew Cab 4x4 SB IT RUNS!!

12-13-2012, 04:16 PM	eBay Motors #15 (permalink)
JHuber219 DuramaxForum n00b Join Date: Sep 2012 Posts: 13	Thanks for the advice guys.. Ill post after I get my air dog on and let you know if I had any luck!

12-16-2012, 08:46 PM	eBay Motors #16 (permalink)
JHuber219 DuramaxForum n00b Join Date: Sep 2012 Posts: 13	Hey Guys, I got my air dog 2 on and my fuel filter bypassed. Wasnt bad at all. BUT! Now the truck will start, but its very inconsistent. Sometimes it fires right up, sometimes it cranks for 10-15 seconds then starts. does start every time. I feel like its lacking some power but of course it may be in my head. Any ideas.

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