injector seal leak??? - Chevy and GMC Duramax Diesel Forum

06-07 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
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post #1 of 3 (permalink) Old 10-21-2010, 03:03 PM Thread Starter
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Location: Race City, North Carolina
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injector seal leak???

i swapped 6 and 8 injectors and put south bend clutch in and every thing .. ran perfectly smooth no shake nothing but after i went up the road like a mile or so and stopped i have a faint shake ... i DID NOT replace o-rings or the copper seals on the injectors when i swapped them ... could the maybe have started leaking and causing a slight shake due to the copper seals loosing a little compression???? and what is the injector hold down torque to ??? thanks

2006 2500HD LBZ Ext Cab SB RED- deallisoned swaped for a zf6 w/south bend double disc...EFI LIVE w/DSP5 Fass pump trutrac differential 5" stacks custom intake water inj no kitty egr blocked race fuel valve 285/70/17 Nitto terra Grapplers on mickey thompson classic II's custom tuned turbo brake leveling kit HD tierods and idler and pit supports custom made trac bars b&w turnover gooseneck and other nic-nacs

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post #2 of 3 (permalink) Old 10-24-2010, 12:07 PM Thread Starter
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nobody knows? well i bought new seals and put them on and torqued them to 30 ft lbs... all was smooth again until i took it up the road now its doing it again??? and the torque is 22 ftlbs by the way .. but is there some trick to getting these injectors to seal??? i cleaned the mating surfaces also.. thanks

2006 2500HD LBZ Ext Cab SB RED- deallisoned swaped for a zf6 w/south bend double disc...EFI LIVE w/DSP5 Fass pump trutrac differential 5" stacks custom intake water inj no kitty egr blocked race fuel valve 285/70/17 Nitto terra Grapplers on mickey thompson classic II's custom tuned turbo brake leveling kit HD tierods and idler and pit supports custom made trac bars b&w turnover gooseneck and other nic-nacs

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post #3 of 3 (permalink) Old 10-25-2010, 01:58 PM Thread Starter
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ok well i now found out the torque is more like 45 and like 60 with arp studs so maybe thats the problem... the dealer was way off on that ... imagine that........ NOTE the torque on these b/c nobody on this forum knows it i guess.. thanks anyways anyone know where to find torque specs on the lbz at?

2006 2500HD LBZ Ext Cab SB RED- deallisoned swaped for a zf6 w/south bend double disc...EFI LIVE w/DSP5 Fass pump trutrac differential 5" stacks custom intake water inj no kitty egr blocked race fuel valve 285/70/17 Nitto terra Grapplers on mickey thompson classic II's custom tuned turbo brake leveling kit HD tierods and idler and pit supports custom made trac bars b&w turnover gooseneck and other nic-nacs

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