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05-13-2008, 09:55 PM
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eBay Motors
#1 (permalink)
| | Junior Member
Join Date: Mar 2008 Location: St. George
Posts: 16
| Fuel Knock
I have an 07 LBZ. When i get on the throttle about 50% the engine starts to knock a little when i get on the throttle 100% it really sounds bad. From 100% to closed throttle the noise goes away. The truck idles fine no engine codes. The balance rates are ok. I checked the compression today and did a leak down test both were fine. I dont want to replace any Injectors if its an ECM problem or an ECM if its an injector problem. It only does it when my EFILive tune is on just dont know which one it could be if either of those two any help would be awesome. Thanks for the help guys!
__________________ 07 LBZ, EGR Block-off, PPE Lift Pump and race valve, Suncoast V with 1057, Volant Intake, 5" Turbo back.
Just got EFI Live...cant wait to see what this truck is capable of.
SNIB  | 
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05-13-2008, 10:02 PM
|
eBay Motors
#2 (permalink)
| | Super Man Moderator Points: 10,595, Level: 44 |
Join Date: Oct 2006 Location: Irwin PA
Posts: 3,136
| Did you check the injectors them self? I know you can check them with a multi-meter 
__________________ Jason 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 4 Kicker 10in Subs & Punch 250amp in 2 custom boxs. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 285/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake  | |
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05-14-2008, 11:17 AM
|
eBay Motors
#3 (permalink)
| | DuramaxForum Fanatic
Join Date: Jul 2007
Posts: 313
| Its normal its the advancement in timing and needing more fuel. When i am at the drag stirp or pulling the sled or trying to get my big spinny then to light without spooling it does it real bad. Make sure timing in the tune is no more then 26 % or it could send a rod south
__________________
Snow flake 2004.5 D/A Efi live, PPE lift pump, 35inch mudders and a florida stack
Team Salad 1 and only 2wd sled puller
13.20@115 mph
I am sorry that i can not make it to threads in times. If u are having a problem and need help pm me and i will get to u ASAP | |
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05-14-2008, 11:35 AM
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eBay Motors
#4 (permalink)
| | DPF Delete man
Join Date: Mar 2008 Location: Columbus,IN
Posts: 3,070
| Ya that sounds like a timing tick, becuase its advanced with your efi live
__________________ 07.5 Chevy Summit White Reg cab LMM, Quadzilla steath 2, 5" MBRP straight pipe, 5" turn-down DPF Deleted, Cobalt boost & pyrometer, line of fire and ice. 5% tint. Banks Ram air intake. Meyer Performance & Fabrication, LLC Home of your diesel performance needs. www.meyerperformance.com (812)-344-4421 Tyler | |
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05-15-2008, 12:20 PM
|
eBay Motors
#5 (permalink)
| | Junior Member
Join Date: Mar 2008 Location: St. George
Posts: 16
| K ill check thanks guys
__________________ 07 LBZ, EGR Block-off, PPE Lift Pump and race valve, Suncoast V with 1057, Volant Intake, 5" Turbo back.
Just got EFI Live...cant wait to see what this truck is capable of.
SNIB | |
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05-15-2008, 12:24 PM
|
eBay Motors
#6 (permalink)
| | Junior Member
Join Date: Mar 2008 Location: St. George
Posts: 16
| Quote:
Originally Posted by Tow Master  Did you check the injectors them self? I know you can check them with a multi-meter | Tow Master please explain more about the multi-meter test you are talkin about.
__________________ 07 LBZ, EGR Block-off, PPE Lift Pump and race valve, Suncoast V with 1057, Volant Intake, 5" Turbo back.
Just got EFI Live...cant wait to see what this truck is capable of.
SNIB | |
| | |
05-16-2008, 12:41 AM
|
eBay Motors
#7 (permalink)
| | Super Man Moderator Points: 10,595, Level: 44 |
Join Date: Oct 2006 Location: Irwin PA
Posts: 3,136
| Quote:
Originally Posted by 07nastymax Tow Master please explain more about the multi-meter test you are talkin about. | Hmm I know you can do it but Im not the best with a multi meter. Heres some of the info I have on it 
__________________ Jason 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 4 Kicker 10in Subs & Punch 250amp in 2 custom boxs. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 285/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake | |
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