Injector feed pipes- how tight?
With ~350K on my LB7, my injectors are looking grim. One shows -2.5 balance at idle and I'm starting to see smoke at the tail pipe (the others vary from +1.5 to -1.0). I'm getting tired of taking this to the dealership for better than $4K each time (I'm on my third set and I've only got ~67K on them). So, I'm doing them myself this time. Questions:
What's your take on replacing only the ones showing high balance rates? I'm doing the work myself, so it's down to parts cost and a tight budget.
How tight should the feed tube nuts be at the fuel rail and at the injector?
And what type of sealant would you recommend for the upper valve cover? Would a black hi-temp RTV be sufficient? (I assume the lower valve cover uses a gasket.)
Last edited by chessy56; 07-13-2014 at 08:25.
Reason: correction
"Chessy56"
So. Milwaukee, WI
'01 2500HD, LB7, ~440K miles
"Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).
'17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.
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